Labradorite is often heavily flawed with internal dark lines and streaks; stones that are clean of flaws are rare. if (headTags.length > 0) Define-se geralmente como tendo "%An" entre 50 e 70. The specific gravity ranges from 2.71 to 2.74. 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. Labradorite belongs to plagioclase feldspars family. Labradorite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. if (gAutoPrint) Labradorite is classified as a plagioclase feldspar with the chemical formula (Ca,Na)[Al(Al,Si)Si 2 O 8]. Labradorite - Color, Facts, Power, Mythology, History And Myths. It has an anorthite percentage (%An) of between 50 and 70. if (document.getElementsByTagName != null) { Crystals are rare, to 2 cm; commonly massive, cleavable, or granular. 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. Its chemical formula is (Ca, Na)(Al, Si) 4 O 8, where Ca/(Ca + Na) (% anorthite) is between 30–50%. The streak is white, like most silicates. These platelets produce a reflective flash when incident light enters the stone at a proper angle relative … Hardness: 6-6.5. Labradorite was named for where it was discovered, Labrador, Canada. - Start-Stop Rotation Labradorite is also known for a good healing gemstone that can refrain from negative feelings. 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'); [2] Dbl Clk - Start-Stop Rotation The color is due to optical interference on Bøggild exsolution lamellae. Journal of Geophysical Research: Solid … Labradorite is often heavily flawed with internal dark lines and streaks; stones that are clean of flaws are rare. Location: Ihosy, Betroka district, Toliara Province, Madagascar. The effect is visible when the lamellar separation is between 128 to 252 nm. html += '\n\n'; Labradorite ((Ca,Na)(Al,Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. printWin.document.write(html); 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. Labradorite belongs to plagioclase feldspars family. Yellows, gold,reds, and purple are some of the other colors shown by specimens of labradorite. The term labradorescence was coined by Ove Balthasar Bøggild, who defined it (labradorization) as follows:[5]. Its iridescent coloring ranges from yellow-orange to blue-green when moved around under light. 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 ... Labradorite is a multi-dimensional mineral, working on both the physical and the etheric bodies. Granular - Generally occurs as anhedral to subhedral crystals in matrix. Labradorite is a plagioclase feldspar, intermediate between albite and anorthite.. } Labradorite is a plagioclase feldspar, intermediate between albite and anorthite.. Labradorite ((Ca, Na)(Al, Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. else var headTags = document.getElementsByTagName("head"); Ask about Labradorite here : Color: Dark grey to grey-black, with colorful iridescence. According to native Canadian tribal lore, Labradorite contains the Northern Lights, known as the Aurora Borealis. {
B - Bonds On/Off Hardness 6. { 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. Crystal System: Triclinic. [8][11] Another requirement for the lamellar separation is very slow cooling of the rock that contains the plagioclase. Yellows, gold,reds, and purple are some of the other colors shown by specimens of labradorite. The stone helps you adopt a similar perspective on life. It has an anorthite percentage (%An) of between 50 and 70. 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. 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 Many of the gemstone lovers have Labradorite. 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. Mindat.org's Discussion Groups
Labradorite stone is a member of the albite family and stone of Uranus planet. Labradorite is named after the Canadian province of Labrador, the classic locality of this gemstone. Hardness: 6-6.5. Labradorite is a mineral that has the chemical formula of (NaCa) 2 Si 2 O 8. Original Rockhounds Discussion Group
[5][6][7], The cause of this optical phenomenon is phase exsolution lamellar structure,[8] occurring in the Bøggild miscibility gap. Labradorite ((Ca, Na)(Al, Si) 4 O 8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. Crystals are commonly twinned after Albite, Pericline, and Carlsbad laws. You can find the explanation on the plagioclase feldspar page. 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. Labradorite - Color, Facts, Power, Mythology, History And Myths. Crystal Structure: Triclinic; platy, prismatic. } 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 . } Sunstone is a plagioclase gemstone in which tiny platelets of copper or another mineral are arranged in a common orientation. var printReadyElem = document.getElementById("printReady"); 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. P - Polyhedra On/Off Labradorite has many meanings and effects of superior healing power. It has an anorthite percentage (%An) of between 50 and 70. 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. I - Indicies Some stones have a greater labradorescence effect then others, and a greater play of color increases the value of the Labradorite. 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 is a feldspar mineral with chemical formula (Ca,Na)(Al,Si)4O8. The chemical formula for Labradorite is considered to be determined as (Na, Ca), Al 1-2, Si 3, o8. Labradorite is a plagioclase feldspar. Hardness 6. if (printReadyElem != null) Labradorite displaying this effect is rare to find. O indíce de refracção varia de 1.555 a 1.575. 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 is an intermediary member of this series. Chemical Formula: (Na,Ca)Al 1-2 Si 3-2 O 8. 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. Comments: Dual view of a cleavage fragment of labradorite showing the multi-colored labradorescence (schiller effect) and the same area viewed without the color. [4] It also is found in metamorphic amphibolites and as a detrital component of some sediments. Labradorite | #Geology #GeologyPage #Minerals Chemical Formula: (Ca,Na)[Al(Al,Si)Si2O8] Locality: Labrador peninsula, Canada. The cause of this optical phenomenon is lamellar structure caused by an exsolution process due to a miscibility gap. Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite. 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 belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. The refractive index ranges from 1.559 to 1.573 and twinning is common. It can be seen as perfect cleavages and uneven to conchoidal fractures as physical properties. alert("Could not find the printReady section in the HTML"); Spectrolite is often cut as a lapidary cabochon, similar to plain labradorite, to enhance the effect and is used as a gemstone. html += printReadyElem.innerHTML; Colors: Grey, brown, green, reddish, rarely colorless. "); Please use it when you are down or stressed out. It helps to assists when facing and navigating all types of changes and challenges, attracting strength and perseverance. LABRADORITE PHYSICAL PROPERTIES. [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 Crystal gets its name from the town of Labrador, Canada, where the stone was discovered. Its chemical name is zirconium silicate and its corresponding chemical formula is ZrSiO4 Mogok, Burma.
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