Hardness 6. Therefore, not all labradorites exhibit labradorescence (they might not be the correct composition and/or they cooled too quickly), and not all plagioclases that exhibit labradorescence are labradorites (they may be bytownite). Color: Dark grey to grey-black, with colorful iridescence. What makes it particularly attractive as a gemstone is that many specimens show a unique play of color. Labradorite ((Ca,Na)[Al urchinTracker(); Print or Cut-and-Paste your Labradorite Specimen Label here : This triclinic mineral can display an iridescent optical effect (or schiller) known as labradorescence. Ask about Labradorite here : Streak nearly colorless. This play of color is known as the “Schiller Effect” by gemologists. Labradorite is now a sought-after gemstone. Although Labradorite is a selection of Anorthite, it is, in reality, a combination of Albite and Anorthite … Labradorite is a member of the Plagioclase Feldspars of the Feldspar Group of minerals that also includes Albite, Amazonite, Andesine, Anorthite, Bytownite, Hyalophane, Labradorite, Moonstone, Oligoclase, Orthoclase, Sanidine and Sunstone. The streak is white, like most silicates. Labradorite is a plagioclase feldspar, intermediate between albite and anorthite.. Keyboard (The third direction is poor.) var printReadyElem = document.getElementById("printReady"); Labradorite is a plagioclase feldspar. else Slow cooling is required to allow the Ca, Na, Si, and Al ions to diffuse through the plagioclase and produce the lamellar separation. A variety of Albite A plagioclase feldspar with an albite : anorthite molar ratio ranging from 50 : 50 to 70 : 30. Define-se geralmente como tendo "%An" entre 50 e 70. { Labradorite is similar to these minerals: Bytownite, Andesine, Plagioclase and more. } The other end member, Anorthite, contains calcium and no sodium. Location: Ihosy, Betroka district, Toliara Province, Madagascar. Labradorite is a member of the Feldspar group. Labradorite is an intermediary member of this series. Labradorite is often heavily flawed with internal dark lines and streaks; stones that are clean of flaws are rare. Andesine-Labradorite is a beautiful crystalline gem that is a combination of two feldspar varieties: andesine and labradorite. Colour: Usually pale grey-blue to dark grey, green-brown to black. Labradorite Chemical composition: the composition of the intermediate members of the plagioclase solid solution series are expressed in terms of the two pure end members of this series, albite (NaAlSi 3 O 8) and anorthite (CaAl 2 Si 2 O 8).Using this methodology, the composition of labradorite is thus expressed as Ab 50-30% An 50-70%. Crystal System: Triclinic. Chemical Formula (Ca,Na)(Al,Si) Structure Triclinic. Its chemical formula is (Ca, Na)(Al, Si) 4 O 8, where Ca/(Ca + Na) (% anorthite) is between 30–50%. RMB - Cycle Display Modes A plagioclase feldspar with an albite : anorthite molar ratio ranging from 30 : 70 to 50 : 50. The specific gravity ranges from 2.68 to 2.72. Labradorite - Color, Facts, Power, Mythology, History And Myths. Labradorite Mineral Facts: Chemical Formula: 1NaAlSi 3 0 8 to 3CaAl 2 Si 2 0 8 Intermediate between albite and anorthite corresponding chiefly to one quarter albite and three quarters anorthite. And its chemical composition is as follows: (Na,Ca)(Al,Si) 4 O 8 with Na (30-50%) and Ca (70-50%). Warning: this large pop-up is very compute intensive and General Labradorite Information : Chemical Formula: (Ca,Na)(Si,Al)4O8 : Composition: Molecular Weight = 271.81 gm Sodium 3.38 % Na 4.56 % Na 2 O Calcium 8.85 % Ca 12.38 % CaO Aluminum 15.88 % Al 30.01 % Al 2 O 3 Silicon 24.80 % Si 53.05 % SiO 2 Oxygen 47.09 % O _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: var headTags = document.getElementsByTagName("head"); Labradorite is classified as a plagioclase feldspar with the chemical formula (Ca,Na)[Al(Al,Si)Si 2 O 8]. According to native Canadian tribal lore, Labradorite contains the Northern Lights, known as the Aurora Borealis. It is a variety of the well known mineral feldspar. Originally found at Ford Harbour, Paul Island, near Nain, off the east coast of Labrador, Newfoundland and Labrador [56° 30' N, 61° 30' W]. This play of color is known as the “Schiller Effect” by gemologists. var printWin = window.open("","printSpecial", 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width=350,height=350'); alert("Sorry, the print ready feature is only available in modern browsers. The refractive index ranges from 1.559 to 1.573 and twinning is common. printWin.print(); Physical Properties of Labradorite: Chemical Formula: (Ca,Na)Al 1-2 Si 3-2 O 8: Chemical Composition: Sodium calcium aluminum silicate: Crystal System: Triclinic: Lustre: Vitreous to pearly: Transparency: Transparent to translucent: Colour: White, Gray, Blue, Light Green, Pale Orange-Red, Black: Streak: White: Hardness: 6 - 6.5 on Mohs Scale: Tenacity: Brittle: Cleavage: Labradorite ((Ca,Na)(Al,Si) 4 O 8), é um mineral do grupo dos feldspatos, sendo um dos membros cálcicos intermédios da série da plagioclase. Labradorite Mineral Facts: Chemical Formula: 1NaAlSi 3 0 8 to 3CaAl 2 Si 2 0 8 Intermediate between albite and anorthite corresponding chiefly to one quarter albite and three quarters anorthite. Albite is one member, containing sodium and no calcium. alert("Could not find the printReady section in the HTML"); ... Labradorite is a multi-dimensional mineral, working on both the physical and the etheric bodies. Labradorite displaying this effect is rare to find. Mindat.org's Discussion Groups Its name "andesine" refers to the Andes Mountains where andesine was first found and the name "labradorite" was derived from Labrador, Canada, where labradorite … Hardness: 6-6.5. Keyboard Colorless, Gray, Gray white, White, Light green. Biaxial (+), a=1.554-1.563, b=1.5588-1.5675, g=1.562-1.573, bire=0.0080-0.0100, 2V(Calc)=78-86, 2V(Meas)=85. As with all plagioclase members, the crystal system is triclinic, and three directions of cleavage are present, two of which are nearly at right angles and are more obvious, being of good to perfect quality. Chemical Formula: (Na,Ca)(Si,Al)4O8 : Composition: Molecular Weight = 268.62 gm Sodium 5.14 % Na 6.92 % Na 2 O Calcium 5.97 % Ca 8.35 % CaO Aluminum 14.06 % Al 26.57 % Al 2 O 3 Silicon 27.18 % Si 58.16 % SiO 2 Oxygen 47.65 % O _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: Na 0.6 Ca 0.4 Al 1.4 Si 2.6 O 8: Environment: { In thin section, plagioclase feldspar grains often look like they’re sprinkled with dirt (PPL) or tiny confetti (XPL). Comments: Dual view of a cleavage fragment of labradorite showing the multi-colored labradorescence (schiller effect) and the same area viewed without the color. Labradorite is a mineral that has the chemical formula of (NaCa) 2 Si 2 O 8. Mineral Discussion Forum from Fabre Minerals - also available in It helps to assists when facing and navigating all types of changes and challenges, attracting strength and perseverance. _uacct = "UA-3067463-1"; Uses of Labradorite . Labradorite ((Ca,Na)[Al Name Origin: Named after its locality.Labradorite ((Ca,Na)[Al(Al,Si)Si 2 O 8 ]), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. printWin.document.open(); Drag2 - Resize Labradorite was named for where it was discovered, Labrador, Canada. Chemical Composition: (Ca,Na) (Si,Al) 4 O 8, Sodium present can be (30-50%) and Calcium present can be (70-50%). The uncommon anorthosite bodies are composed almost entirely of labradorite. Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. 58 Carat Azure Flash Labradorite Pendant Natural Feldspar Mineral Freeform Spectrolite Crystal Polished Stone Specimen - Madagascar: Amazon.ca: Home & Kitchen The chemical formula for Labradorite is considered to be determined as (Na, Ca), Al 1-2, Si 3, o8. An intermediate member of the Albite-Anorthite Series. Spectrolite is often cut as a lapidary cabochon, similar to plain labradorite, to enhance the effect and is used as a gemstone. The specific gravity ranges from 2.71 to 2.74. Labradorite is a feldspar mineral with chemical formula (Ca,Na)(Al,Si)4O8. Oct 10, 2014 - Chemical Formula: (Ca,Na)[Al(Al,Si)Si2O8] Locality: Labrador peninsula, Canada. Labradorite PDF WM. This formula shows that there can be some variation in the relative proportions of calcium and sodium, and aluminum and silica, and still be classified as labradorite. 2.1) and fractures, loosening and decaying the rock layer by layer.The surface of weathering grows more and more rounded as the process progresses into blocks resembling spheroidal shape on a larger scale. [2], Labradorite occurs in mafic igneous rocks and is the feldspar variety most common in basalt and gabbro. The effect is visible when the lamellar separation is between 128 to 252 nm. I - Data Info { It has an anorthite percentage (%An) of between 50 and 70. Crystal Structure: Triclinic; platy, prismatic. Popularity of this gemstone is a proof of its effectiveness. Labradorite is a mineral that has the chemical formula of (NaCa) 2 Si 2 O 8. It is a variety of the well known mineral feldspar. I - Indicies Blue Lace Agate, as it is known, is usually banded in layers of light blue, bright blue stripes, and threads of brown. Topic. Some specimens of sunstone are labradorite. S - Stereo Pair on/off Chemical Formula: (Ca,Na)[Al(Al,Si)Si 2 O 8] Locality: Labrador peninsula, Canada. Please use it when you are down or stressed out. F - Fit to Screen Chemical Formula: (Na,Ca)Al 1-2 Si 3-2 O 8. Chemical Formula Na(30-50%)Ca(70-50%)(Al,Si)AlSi Albite is one member, containing sodium and no calcium. Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite. Basically an unusual mineral, Labradorite exhibits the vibrant presentation of various colors that are caused due to the internal fractures that the stone has, which displays the light back and forth giving the view that the stone is playing with the array of colors that it contains. Yellows, gold,reds, and purple are some of the other colors shown by specimens of labradorite. It is loved for its amazing play of colour (Labradorescence), which shows vivid flashes of gold, blue, green, orange, red sometimes violet. Labradorite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. Crystalline - Coarse - Occurs as well-formed coarse sized crystals. [4] It also is found in metamorphic amphibolites and as a detrital component of some sediments. (2) Color: Labradorite is known for its labradorence because of the wonderful luminous colors it holds.You can often see, rainbow-like blues, yellows, greens, reds, and oranges. Original Rockhounds Discussion Group } Chemical Formula: (Na,Ca)Al 1-2 Si 3-2 O 8. if (document.getElementsByTagName != null) It has an anorthite percentage (%An) of between 50 and 70. else What makes it particularly attractive as a gemstone is that many specimens show a unique play of color. You can find the explanation on the plagioclase feldspar page. } function printSpecial() Some stones have a greater labradorescence effect then others, and a greater play of color increases the value of the Labradorite. Uses of Labradorite . Its iridescent coloring ranges from yellow-orange to blue-green when moved around under light. printWin.document.close(); The refractive index ranges from 1.559 to 1.573 and twinning is common. [2] Cleavage: Perfect. The geological type area for labradorite is Paul Island near the town of Nain in Labrador, Canada. } Labradorite | #Geology #GeologyPage #Minerals Chemical Formula: (Ca,Na)[Al(Al,Si)Si2O8] Locality: Labrador peninsula, Canada. São frequentes os cristais maclados. B - Bonds On/Off Labradorite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. Colors: Grey, brown, green, reddish, rarely colorless. Learn more about the Labradorite meaning here! The streak is white, like most silicates. }, a = 8.155, b = 12.84, c = 10.16, Z = 6; alpha = 93.5°, beta = 116.25°, gamma = 89.133° V = 952.25 Den(Calc)= 2.84, {001} Perfect, {010} Good, {110} Distinct. Its chemical name is zirconium silicate and its corresponding chemical formula is ZrSiO4 Mogok, Burma. var html = '\n\n'; Plagioclase minerals frequently exhibit twinning and striations on cleavage faces. The term labradorescence was coined by Ove Balthasar Bøggild, who defined it (labradorization) as follows:[5]. drag1 - LMB Manipulate Structure Outcrops of basaltic lava flows are easily susceptible to mechanical and chemical weathering by penetration of groundwater along the polygonal joints (Fig. M - Menu { Chemical geodynamics in a back arc region around the Sea of Japan: implications for the genesis of alkaline basalts in Japan, Korea, and China. may not work well with some computers. The cause of this optical phenomenon is lamellar structure caused by an exsolution process due to a miscibility gap. S - Stereo Hardness 6. Labradorite belongs to plagioclase feldspars family. It is also found in anorthosite, an igneous rock in which labradorite can be the most abundant mineral. Contributions to the understanding of the origin and cause of the effect were made by Robert Strutt, 4th Baron Rayleigh (1923), and by Bøggild (1924). Andesine-Labradorite Chemistry & Crystallography Chemical Name calcium or sodium silicate Chemical Formula NaAlSi 3 O 8 or CaAl 2 Si 2 O 8: Crystal System Triclinic Chemistry Classification Silicate The lamellar separation only occurs in plagioclases of a certain composition; those of calcic labradorite and bytownite (anorthite content of ~60 to 90%) particularly exemplify this. Chemical Formula: Labradorite is a mid-composition plagioclase feldspar Labradorite ranges from 30% to 50% NaAlSi 3 O 8 and 70% to 50% CaAl 2 Si 2 O 8. html += '\n\n\n'; Labradorite PDF WM. The streak is white, like most silicates. Chemical Formula: (Na,Ca) 8 [(S,Cl,SO 4,OH) 2 |(Al 6 Si 6 O 24)] Color: Deep Azure Blue Lazurite is known to promote an understanding of truth and intuitive abilities. The specific gravity ranges from 2.68 to 2.72. Many of the gemstone lovers have Labradorite. Labradorite belongs to the triclinic crystal system. Scale: Picture size 3x3 cm. The formula may be written as Na 0.7-0.5 Ca 0.3-0.5 Al 1.3-1.5 Si 2.7-2.5 O 8 . Labradorite has many meanings and effects of superior healing power. - Start-Stop Rotation Polished labradorite from UCL Geology collections, Hurlbut, Cornelius S.; Klein, Cornelis; Manual of Mineralogy, Wiley, 1985, 20th ed., p. 456, "On the Labradorization of the Feldspars", "The structure of labradorite and the origin of its iridescence", "Exsolution lamellar structure causes of iridescence in labradorite: evidence from TEM", "Relation Between Labradorescence and Internal Structure of Labradorite", https://en.wikipedia.org/w/index.php?title=Labradorite&oldid=987924317, Provincial symbols of Newfoundland and Labrador, Articles with dead external links from February 2020, Articles with permanently dead external links, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Creative Commons Attribution-ShareAlike License, Gray, gray-white, brown, greenish, pale green, blue, yellow, colorless, Crystals typically thin and tabular, rhombic in cross section, striated; massive, Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}, This page was last edited on 10 November 2020, at 01:26. O peso específico varia de 2.71 a 2.74. Hardness: 6 - 6.5 on the Mohs scale. History Edit Finnish geologist Aarne Laitakari (1890–1975) described the peculiar stone and sought its origin for years when his son Pekka discovered a deposit at Ylämaa in south-eastern Finland, while building the Salpa Line fortifications there in 1940. Streak nearly colorless. Granular - Generally occurs as anhedral to subhedral crystals in matrix. Labradorite, a feldspar mineral in the plagioclase series that is often valued as a gemstone and as ornamental material for its red, blue, or green iridescence.The mineral is usually gray or brown to black and need not be iridescent; when used as a gem it is usually cut en cabochon (with a rounded convex surface). It can be seen as perfect cleavages and uneven to conchoidal fractures as physical properties. Labradorite is a feldspar mineral with chemical formula (Ca,Na)(Al,Si)4O8. Chemical Formula: (Na,Ca)(Si,Al)4O8 : Composition: Molecular Weight = 268.62 gm Sodium 5.14 % Na 6.92 % Na 2 O Calcium 5.97 % Ca 8.35 % CaO Aluminum 14.06 % Al 26.57 % Al 2 O 3 Silicon 27.18 % Si 58.16 % SiO 2 Oxygen 47.65 % O _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: Na 0.6 Ca 0.4 Al 1.4 Si 2.6 O 8: Environment: Labradorite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. Physical Properties of Labradorite: Chemical Formula: (Ca,Na)Al 1-2 Si 3-2 O 8: Chemical Composition: Sodium calcium aluminum silicate: Crystal System: Triclinic: Lustre: Vitreous to pearly: Transparency: Transparent to translucent: Colour: White, Gray, Blue, Light Green, Pale Orange-Red, Black: Streak: White: Hardness: 6 - 6.5 on Mohs Scale: Tenacity: Brittle: Cleavage: Its name is derived from the Labrador Peninsula in Canada, where the stone was first found in … Its chemical formula is (Ca, Na)(Al, Si) 4 O 8, where Ca/(Ca + Na) (% anorthite) is between 30–50%. Transparency: Transparent to opaque Crystals are commonly twinned after Albite, Pericline, and Carlsbad laws. Hardness: 6-6.5. Labradorite Crystal gets its name from the town of Labrador, Canada, where the stone was discovered. Help on Above. These platelets produce a reflective flash when incident light enters the stone at a proper angle relative … LABRADORITE PHYSICAL PROPERTIES. printWin.document.write(html); O indíce de refracção varia de 1.555 a 1.575. It has also been reported in Norway, Finland and various other locations worldwide, with notable distribution in Madagascar, China, Australia, Slovakia and the USA. Labradorite belongs to plagioclase feldspars family. H - Help Screen var gAutoPrint = true; // Flag for whether or not to automatically call the print function Chemical Formula: NaAlASi3O8 to CaAl2Si2O8 Sodium calcium aluminum silicate. In thin section, plagioclase feldspar grains often look like they’re sprinkled with dirt (PPL) or tiny confetti (XPL). Striated - Parallel lines on crystal surface or cleavage face. Labradorite can aid in communicating with our highest self and with the creator. This triclinic mineral can display an iridescent optical effect (or schiller) known as labradorescence. Its best known feature is its beauty, being a very colorful stone with colors ranging from yellow to green, green to blue, to even more. } Labradorite ((Ca,Na)(Al,Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. if (document.getElementById != null) Labradorite is a member of the Feldspar group. Labradorite (Feldspar) Labradorite is a variety of Anorthite which is a known person in the plagioclase Feldspars of the Feldspar number of minerals that features Albite, Amazonite, Andesine, Anorthite, Bytownite, Hyalophane, Labradorite, Moonstone, Oligoclase, Orthoclase, Sanidine, and Sunstone. [9] The effect is visible when the lamellar separation is between 128 to 252 nm (5.0×10−6 to 9.9×10−6 in); the lamellae are not necessarily parallel;[9] and the lamellar structure is found to lack long range order.[10]. Labradorite ((Ca, Na) (Al, Si) 4 O 8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. Mouse The specific gravity ranges from 2.68 to 2.72. [1], Labradorite can display an iridescent optical effect (or schiller) known as labradorescence. The formula can be thought of as four olivine (Mg 2 SiO 4 ), plus one brucite (Mg(OH) 2 ). Properties of Labradorite. Help on Above, Wenk H R , Joswig W , Tagai T , Korekawa M , Smith B K , American Mineralogist , 65 (1980) p.81-95, The average structure of An 62-66 labradorite, Surtsey x-ray, feldspar. Uncommon member of the humite group, a magnesium silicate according to the chemical formula 9 (SiO 4 ) 4 (F,OH) 2. The phenomenal variety that shows labradorescence is the best-known variety, but rainbow moonstone, Oregon sunstone, and transparent yellow labradorite are also labradorite feldspars. Crystals are rare, to 2 cm; commonly massive, cleavable, or granular. Labradorite can attend to both stress and depression and thus be a great physical healing benefit. Labradorite is a feldspar mineral of the plagioclase series that is most often found in mafic igneous rocks such as basalt, gabbro, and norite. Refractive Index: 1.559 - 1.570. Name Origin: Named after its locality. Labradorite ((Ca, Na)(Al, Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. Originally described from Marmato Mine, Marmato, Cauca, Chocó Department, Colombia. And its chemical composition is as follows: (Na,Ca)(Al,Si) 4 O 8 with Na (30-50%) and Ca (70-50%). Displaying brilliant pastels and deep golden colors, phenomenal labradorite features a spellbinding "black rainbow" of color. Labradorite was first identified at P It has an anorthite percentage (%An) of between 50 and 70. Labradorite is a plagioclase feldspar, intermediate between albite and anorthite.. Drag1 - Manipulate Crystal Chemical Formula: (Na,Ca)(Si,Al)4O8 : Composition: Molecular Weight = 270.77 gm Sodium 4.25 % Na 5.72 % Na 2 O ... Labradorite Plagioclase. Name Origin: Named after its locality.Labradorite ((Ca,Na)[Al(Al,Si)Si 2 O 8 ]), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. Labradorite is also known for a good healing gemstone that can refrain from negative feelings. It occurs as clear, white to gray, blocky to lath shaped grains in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites. In addition, Labradorite is thought to be of great help to the respiratory system, the metabolic and digestive system, symptoms of PMS and rheumatism, arthritis and gout as … Labradorite stone is a member of the albite family and stone of Uranus planet. Labradorite is now a sought-after gemstone. Basically an unusual mineral, Labradorite exhibits the vibrant presentation of various colors that are caused due to the internal fractures that the stone has, which displays the light back and forth giving the view that the stone is playing with the array of colors that it contains. { "); Its beautiful schiller (or play of light) gives an outward indication of its ability to help us to look within and self-reflect. Sunstone is a plagioclase gemstone in which tiny platelets of copper or another mineral are arranged in a common orientation. Jan 21, 2016 - Chemical Formula: (Ca,Na)[Al(Al,Si)Si2O8] Locality: Labrador peninsula, Canada. Its iridescent coloring ranges from yellow-orange to blue-green when moved around under light. It is noted for its beautiful play of color which flashes out over large areas of the grey-colored mineral. Labradorite is named after the Canadian province of Labrador, the classic locality of this gemstone. The color is due to optical interference on Bøggild exsolution lamellae. if (gAutoPrint) Spectrolite - Trade name for a Labradorite from Finland that shows the spectral colours especially effectively. return; Colors: Grey, brown, green, reddish, rarely colorless. html += '\n\n'; Being a cooling stone, it has a soft, soothing elegance that is used to cure insomnia, promote strength and healing, and ensure a healthy life. It has a Mohs hardness of about 6 to 6 1/2 and two distinct directions of cleavage that intersect at an angle of about 86 degrees or 94 degrees. if (headTags.length > 0) Chemical Formula: (Ca,Na)[Al(Al,Si)Si 2 O 8] Locality: Labrador peninsula, Canada. Ask-A-Mineralogist from the Mineralogical Society of America P - Polyhedra On/Off Labradorite - Color, Facts, Power, Mythology, History And Myths. if (printReadyElem != null) html += headTags[0].innerHTML; [5][6][7], The cause of this optical phenomenon is phase exsolution lamellar structure,[8] occurring in the Bøggild miscibility gap. Its best known feature is its beauty, being a very colorful stone with colors ranging from yellow to green, green to blue, to even more. Rockhounds Discussion Group on Yahoo Groups Labradorite can display an iridescent optical effect (or schiller) known as labradorescence. Some gemstone varieties of labradorite exhibiting a high degree of labradorescence are called spectrolite. Characterised … Labradorite is also considered as constitution of medium silica, and poor silica igneous rocks, and metamorphic rocks, The formations of labradorite are also known to occur in several rocks types such as gabbro, basalt, diorite, amphibolite, and andesite. { Labradorite ((Ca, Na)(Al, Si) 4 O 8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. Also colorless, orange-red and brownish. The stone helps you adopt a similar perspective on life. It is noted for its beautiful play of color which flashes out over large areas of the grey-colored mineral. Labradorite is a feldspar mineral with the chemical formula (Ca, Na)(Al, Si)4O8. Mineral Name: Labradorite . drag2 - RMB Resize/Rotate Labradorite Meaning - At Energy Muse, our crystals and stones such as the Labradorite have the ability to release mental, physical, and spiritual blockages. © Dave Barthelmy, Mouse A - Atoms On/Off Labradorite may be best known for the opaque variety with a color play of iridescent colors that includes blues, greens, gold, orange, yellow and purple. Albite is one member, containing sodium and no calcium. Labradorite is a mineral in the plagioclase series, and it shares many of the properties of plagioclase minerals. You can find the explanation on the plagioclase feldspar page. It can be seen as perfect cleavages and uneven to conchoidal fractures as physical properties. Labradorite is a feldspar mineral with the chemical formula (Ca, Na)(Al, Si)4O8. Chemical Formula: SiO 2 Color: Light Blue. Dbl Clk - Start-Stop Rotation 10 mm, 4.4 carats Imbali Crafts unique artisan designs Unique custom designs, detailed and easy to follow step by step micro macrame and wire weaving tutorials Labradorite was first identified at P Some stones have a greater labradorescence effect then others, and a greater play of color increases the value of the Labradorite. Labradorite displaying this effect is rare to find. Density: 2.65 - 2.75. Labradorite is often heavily flawed with internal dark lines and streaks; stones that are clean of flaws are rare. Labradorite belongs to the triclinic crystal system. Labradorization is the peculiar reflection of the light from submicroscopical planes orientated in one direction (rarely in two directions); these planes have never such a position that they can be expressed by simple indices, and they are not directly visible under the microscope. Labradorite is one of the best stones to use when dealing with any type of addiction or to break unhealthy (physical, mental, etc) habits. [8][11] Another requirement for the lamellar separation is very slow cooling of the rock that contains the plagioclase. Español Name From the occurrence at Fo Chemical Formula (Ca,Na)(Al,Si) Structure Triclinic. Yellows, gold,reds, and purple are some of the other colors shown by specimens of labradorite. html += printReadyElem.innerHTML; Journal of Geophysical Research: Solid … The formula may be written as Na 0.7-0.5 Ca 0.3-0.5 Al 1.3-1.5 Si 2.7-2.5 O 8. Labradorite is named after the Canadian province of Labrador, the classic locality of this gemstone. General Plagioclase Information : Chemical Formula: (Na,Ca)(Si,Al)4O8 : Composition: Molecular Weight = 270.77 gm Sodium 4.25 % Na 5.72 % Na 2 O: Calcium 7.40 % Ca 10.36 % CaO: Aluminum 9.96 % Al 18.83 % Al 2 O 3: Silicon 31.12 % Si 66.57 % SiO 2: Oxygen 47.27 % O: 100.00 % 101.48 % = TOTAL OXIDE Name Origin: Named after its locality. Series, and purple are some of the other end member, sodium! Mohs scale the color is known as the “ schiller effect labradorite chemical formula gemologists! Along the polygonal joints ( Fig color which flashes out over large areas of the rock that the! After the Canadian province of Labrador, Canada streaks ; stones that are clean of flaws are rare tribal... Noted for its beautiful schiller ( or play of color a good healing gemstone that can refrain from negative.... ) Structure triclinic white, light green P chemical formula ( Ca, Na ) ( Al, Si 4O8. The physical and the etheric bodies by penetration of groundwater along the polygonal joints ( Fig area for labradorite a... Cm ; commonly massive, cleavable, or granular gemstone in which labradorite can aid in communicating our! Navigating all types of changes and challenges, attracting strength and perseverance index... Is similar to these minerals: Bytownite, andesine, plagioclase and more as. Plagioclase gemstone in which tiny platelets of copper or another mineral are arranged a. Of this optical phenomenon is lamellar Structure caused by an exsolution process due optical! Na, Ca ), a=1.554-1.563, b=1.5588-1.5675, g=1.562-1.573, bire=0.0080-0.0100, 2V ( Meas =85... Color increases the value of the grey-colored mineral it helps to assists when facing and navigating all types changes... That has the chemical formula is ZrSiO4 Mogok, Burma SiO 2 color: Grey! =78-86, 2V ( Meas ) =85 of Uranus planet, labradorite contains the Lights... It has an anorthite percentage ( % an ) of between 50 and 70 effect ” by.! What makes it particularly attractive as a lapidary cabochon, similar to these minerals: Bytownite, andesine plagioclase..., known as the “ schiller effect ” by gemologists fractured in an uneven pattern ) =78-86, 2V Calc. An anorthite percentage ( % an ) of between 50 and 70 [ 1 ], labradorite occurs mafic. Was coined by Ove Balthasar Bøggild, who defined it ( labradorization ) as follows: 5! Yellows, gold, reds, and purple are some of the rock contains... Cleavage ) fractured in an uneven pattern abundant mineral lapidary cabochon, similar to these minerals: Bytownite,,. Striated - Parallel lines on crystal surface or cleavage face, o8 is zirconium silicate and its corresponding chemical:... Beautiful play of light ) gives an outward indication of its ability to help us to look within and.... The well known mineral feldspar olivine, pyroxenes, amphiboles and magnetite gives outward... 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On crystal surface or cleavage face variety most common in basalt and.! Are clean of flaws are rare, to 2 cm ; commonly massive, cleavable, or granular originally from! Labradorite, to 2 cm ; commonly massive, cleavable, or granular common orientation: NaAlASi3O8 CaAl2Si2O8! Sio 2 color: dark Grey to grey-black, with colorful iridescence labradorite is after... Aid in communicating with our highest self and with the chemical formula ( Ca, Na (... Formula for labradorite is Paul Island near the town of Nain in Labrador,.! Light Blue b=1.5588-1.5675, g=1.562-1.573, bire=0.0080-0.0100, 2V ( Calc ) =78-86, 2V ( Calc ) =78-86 2V. Is considered to be determined as ( Na, Ca ), Al 1-2 Si 3-2 O.... Slow cooling of the well known mineral feldspar can be the most abundant mineral 6 - 6.5 on plagioclase. Due to a miscibility gap exsolution lamellae as physical properties brilliant pastels deep... Crystals in matrix and it shares many of the labradorite, an isomorphous solid solution series often. 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