Anorthite - Wikipedia
网页Anorthite is the calcium-rich endmember of the plagioclase solid solution series, the other endmember being albite (NaAlSi 3 O 8). Anorthite also refers to plagioclase compositions with more than 90 molecular percent of the anorthite endmember.
Anorthite Mineral Data
网页Locality: Monte Somma and Valle di Fassa, Italy. Link to MinDat.org Location Data. Name Origin: From the Greek, an + orthos, "not upright" in allusion to the oblique crystals. Name Pronunciation: Anorthite + Pronunciation. Synonym: Ab0.
Anorthite: Mineral information, data and localities. - mindat.org
网页Formula: Ca (Al2Si2O8) Colour: Colourless, reddish grey, white. Lustre: Vitreous. Hardness: 6 - 6½. Specific Gravity: 2.74 - 2.76. Crystal System: Triclinic. Member of: Plagioclase Group > Feldspar Group. Name:
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 | Igneous, Plutonic, Calcium | Britannica
网页Anorthite, a feldspar mineral, calcium aluminosilicate (CaAl2Si2O8), that occurs as white or grayish, brittle, glassy crystals. Primarily a rock-forming mineral, it is used in the manufacture of glass and ceramics. Anorthite occurs in basic igneous rocks, as at Trentino, Italy; Södermanland, Swed.;
Anorthite | NOVA Mineralogy - nvcc.edu
网页Anorthite is the calcic end member of the plagioclase feldspar series. In thin section, plagioclase feldspar grains often look like they’re sprinkled with dirt (PPL) or tiny confetti (XPL). You can find the explanation on the plagioclase feldspar page.
Igneous rock - Albite, Anorthite, System | Britannica
网页5 天之前 · Most of the common minerals found in igneous rocks are solid-solution phases. These include olivine, pyroxene, amphibole, biotite, and plagioclase feldspars. Crystallization behaviour is illustrated best by using the NaAlSi 3 O 8 (albite or Ab)–CaAl 2 Si 2 O 8 (anorthite or An) plagioclase system shown in Figure 4.
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.
Anorthite - mindat.org
网页Anorthite. Miyake Island, Miyake Subprefecture, Tokyo Metropolis, Japan. 2.4 x 1.7 x 1.7 cm. Anorthite is the calcium-rich end member of the albite-anorthite feldspar series. This old-time thumbnail is from a classic Japanese locality - Miyake Island and is a floater cluster of sharp, grayish-white anorthite crystal partially coated with a film ...
Anorthite - CAMEO
网页2022年12月6日 · Description. A calcium-rich plagioclase feldspar mineral composed of calcium aluminosilicate. Anorthite occurs as brittle, translucent, white ,or gray crystals. It is found in many igneous rocks such as Gabbro and Granite.