Juvinas vs Johnstown
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Juvinas
Juvinas is a basaltic eucrite meteorite that fell in Ardèche, France, in 1821. Eucrites are achondrites derived from basaltic igneous rocks, and they form part of the HED clan together with howardites and diogenites. Juvinas is an early and substantial studied fall whose mineralogy and texture provide evidence of melting, crystallization, and later impact processing on a differentiated parent body...
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Johnstown
Johnstown is a diogenite meteorite that fell near Johnstown, Colorado, in July 1924 after a witnessed fireball and detonations. About 23 kilograms of material were recovered, making it a substantial documented diogenite fall. Its coarse-grained, orthopyroxene-rich composition places it within the howardite-eucrite-diogenite clan, meteorites generally interpreted as samples from deep within the cru...
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