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MD-169929 - Anorthite - - Archived Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy small cabinet, 6.9 x 4.1 x 3.8 cm.
6.9 x 4.1 x 3.8 cm. Among the least common of the plagioclase feldspar family, this specimen of anorthite is significant because it is from the TYPE LOCALITY and has isolated sharp crystals nestled in basaltic vugs. The anorthite crystals are surprisingly lustrous, somewhat translucent and white. Elongated, textbook-like crystals reach 1.0 cm in length and form a super color contrast with the host black basalt.
MD-221029 - Anorthite - - Archived Miyake Island (Miyake-jima), Izu Archipelago, Tokyo Prefecture, Japan thumbnail, 2.4 x 1.7 x 1.7 cm.
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 of blackish glassy lava. Miyake Island is a small island with an active volcano and is famous as the classic locality for anorthite crystals, thousands of which were thrown out loose by the 1870 eruption and distributed in collections around the world. Accompanied by an expertly handwritten, faded label from an older collection. The collection this came out of was a museum stash dating to prior to World War I.
MD-261478 - Vesuvianite, Anorthite - - Archived Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy small cabinet, 6.4 x 5.5 x 4.8 cm.
6.4 x 5.5 x 4.8 cm. The famous Mt. Vesuvius near Naples, Italy is the Type Locality for vesuvianite and the feldspar anorthite. This excellent, older specimen is richly covered with gemmy and lustrous, brown vesuvianite crystals to 9 mm and is beautifully accented with glassy, white anorthite lathes. The vesuvianites have striking flashes of yellow-orange fire. Very highly representative combination material from this famous locale. Ex. Mullane Collection and accompanied by a 1960s-1970s era Burminco label.
MD-263819 - Anorthite, Aragonite - - Archived Naxos (Nisos Naxos; Naxia) Island, Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon), Kykládes Prefecture, Aegean Islands (Aiyaíon) Department, Greece small cabinet, 7.3 x 6.5 x 5.8 cm.
7.3 x 6.5 x 5.8 cm. Mineral specimens are rare indeed from the ancient emery mines at Naxos Island, Greece, mined for emery by the Classical Greeks. The vuggy matrix is probably metabauxite. A really pretty, 1.7 cm radial, starburst-like spray of lustrous, colorless aragonite prisms rests above a euhedral, glassy, tabular, 1.3 cm, partially coated anorthite crystal. This old-time specimen certainly dates to the 19th Century and is from the Philadelphia Academy of Sciences Collection.
MD-270110 - Anorthite (Var: Bytownite) - - Archived Dorado Mine, Casas Grandes, Chihuahua, Mexico miniature, 3.7 x 2 x 1.3 cm.
3.7 x 2 x 1.3 cm. A somewhat rounded, alluvial crystal of this rare gem feldspar variety - normally only seen as facet rough and almost never as a crystallized specimen. This is a rare example of a bytownite crystal. It is gemmy and transparent in person. Ex. Martin Zinn Collection.
RARE08-38 - Anorthite - AUS$ 387 SOLD Mt. Somma-Vesuvius Complex, Napoli, Campania, Italy (TYPE LOCALITY) small cabinet, 6.9 x 4.1 x 3.8 cm
Among the least common of the plagiclase feldspar family, this specimen of anorthite is significant because it is from the TYPE LOCALITY and has isolated sharp crystals nestled in basaltic vugs. The anorthite crystals are surprisingly lustrous, somewhat translucent and white - they look more like phenacite than anything else. Elongated, textbook-like crystals reach 1.0 cm in length and form a super color contrast with the host black basalt. This specimen is from the type locality for anorthite.
TN22 - Anorthite (from volcano, in 1870!) - AUS$ 160 SOLD Miyake Island (Miyake-jima), Izu Archipelago, Tokyo Prefecture, Japan thumbnail, 1.6 x 1.2 x 1 cm
These are euhedral crystals of one of the rarest members of the plagioclase feldspar family, typoical but rare for the locality on the market these days - I have only seen a few in overa decade since seeing the first one. These crystals are opaque white and reach 1 cm across. From mindat: This locality is a small island with active volcano. Augite-olivine basalt. Famous as the classic locality for anorthite crystals, thousands of which were thrown out loose by the 1870 eruption and distributed in collections around the world; usually coated with a film of reddish or blackish glassy lava. All Content and Design ©1996-2010 The ArkenstoneBy-species Galleries | ||||||||||||||
