Anorthite - Wikipedia
网页Anorthite (an = not, ortho = straight) is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is Ca Al 2 Si 2 O 8 . Anorthite is found in mafic igneous rocks .
Anorthite Gemstone: Properties, Meanings, Value & More - Gem …
网页2022年7月16日 · Pure anorthite is mostly a collector’s crystal, usually sold rough. It has a rigid, granular, and sometimes bubbly texture. When used as a gem, anorthite is rarely cut en cabochon. More often, anorthite is faceted, but gems are typically quite small as a result of their obscurity.
Anorthite: Mineral information, data and localities. - mindat.org
网页Ca-rich end member of the plagioclase (Albite-Anorthite Series). High- and low-temperature structural modifications exist. Visit gemdat.org for gemological information about Anorthite.
Anorthite Value, Price, and Jewelry Information - Gem Society
网页What is Anorthite? Anorthite is the most calcium-rich/sodium-poor plagioclase feldspar (90-100% Ca/10-0% Na). It forms a solid solution series with sodium-rich/calcium-poor albite (90-100% Na/10-0% Ca).
Anorthite - Wikiwand
网页Anorthite (an = not, ortho = straight) is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is CaAl 2 Si 2 O 8. Anorthite is found in mafic igneous rocks. Anorthite is rare on the Earth [6] but abundant on the Moon. [7]
Anorthite: The feldspar mineral Anorthite information and pictures
网页The Mineral anorthite. Anorthite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. Albite is one end member, containing sodium and no calcium. The other end member, Anorthite, contains calcium and no sodium. The intermediary members are Oligoclase, Andesine, Labradorite, and Bytownite.
Anorthite (Anorthite) - Rock Identifier
网页Anorthite is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is CaAl2Si2O8. Anorthite is found in mafic igneous rocks. Anorthite is rare on the Earth but abundant on the Moon.
Anorthite Mineral Data
网页Anorthite Plagioclase. Comments: Opaque white crystal of anorthite with dark brown solidified lava coating. Location: Miyake-jima, Shizuoka, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
ANORTHITE (Calcium Aluminum Silicate) - Amethyst Galleries
网页Chemistry: CaAl 2 Si 2 O 8, Calcium aluminum silicate. Uses: only as mineral specimens. Anorthite is an end member and one of the rarer members of the plagioclase series. The plagioclase series comprises minerals that range in chemical composition from pure NaAlSi 3 O 8, Albite to pure CaAl 2 Si 2 O 8 , anorthite.
网页Anorthite Na0:1¡0:0Ca0:9¡1:0Al1:9¡2:0Si2:1¡2:0O8. Crystal Data: Triclinic. Point Group: 1: Crystals commonly short, prismatic on [001], rarely on [010], to 2 cm; lamellar, coarse granular, massive. Twinning: Commonly polysynthetic on the Albite law; also after the Pericline, Carlsbad, Manebach, and Baveno laws.
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