Template:Meteorite Catalog Tschermak 1872
From Wikipedia, the free encyclopedia
Meteorite Catalog Tschermak 1872
(II) Olivine, bronzite, enstatite.
Meteoric iron barely noticeable.
Shalkite: Granular. Olivine and bronzite. [[Tschermak had included this category from Rose (1863), but he discovered in 1883 that the Shalka meteorite did not contain any olivine and proposed the term "diogenite" for hypersthene achondrites. ]] [2 ] (Ma)
Manegaumite: Whitish tuff-like. Bronzite. (*) Bishopsville: White, granular. Enstatite.
(*) Bustee: Whitish, granular. Enstatite and augite.
Howardite: Whitish, tuff-like. Olivine and augite? Anorthite?
(III) Olivine and bronzite with meteoric iron. Chondrites.
(Ch) Whitish chondritic tuffs with small blackish fragments and few spheres. Similar to howardites.
(Cw) White masses without spheres or with whitish spheres.
(Cwb) Same as Cw but with striking breccia-like structures.
(Ci) Interlink between Cw and the other members of category III.
(Cib) Same as Ci but with striking breccia-like structures.
(Cg) Grey chondrites. Grey masses, with brighter spheres. The brown, hard, fine-fibrous spheres are missing or are few in numbers.
(Cgb) Same as Cg but with striking breccia-like structures.
(*) Ornans meteorite: A loose grey mass with dust-like fine spheres.
(Cc) Chondrite with brown, hard, fine-fibrous spheres.
(*) Tadjera meteorite: Black, half-vitreous mass.
(Ck) Chondrites, that are predominantly out of a crystalline granular mass.
(Ckb) Same as Ck but with striking breccia-like structures.
(*) Lodran meteorite: Crystals of olivine and bronzite, connected by a very fine network of meteoric iron.
(IV) Silicates and meteoric iron in granular conglomerates
(V) Meteoric iron, that have inclusions of silicate crystals.
(a) With shell-like composition parallel to the octahedron.
(Of) Thin lamella. Fine Widmanstädten pattern.
(Om) Normal lamella and patterns. Boundary of lamella is even.
(Ok) Same as Om but boundaries are uneven.
(Og) Wide lamella. Pattern coarse.
(b*) Zacatecas meteorite. Consists of shell-like coarse-grained pieces.
(c) Hb: Meteoric iron out of many simple (not shell-like) coarse-grained pieces.
(d) H: Out of one crystal without shell-like composition.
(e*) Capland. Seemingly dense. Dull after etching, but shows continuous stripes.
(f) D: Granular and dense. No patterns after etching.
References [ edit ]
^ Arestides, Brezina (1885). Die Meteoritensammlung des k. k. mineralogischen Hofkabinetes in Wien am 1. Mai 1885.
^ Mason, Brian (1963-09-24). "The Hypersthene Achondrites". American Museum Novitates (2155): 1–13 . Retrieved 29 December 2012.