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NWA 6930 H3.8 (S2,W1) 4.93g Meteorite Full Slice

 4.93g slice of NWA 6930 H3.8 chondrite. A type sample was analyzed by Tony Irving of University of Washington, and classified as an H4 ordinary chondrite with a shock stage of S2 and weathering grade of W1. The meteorite is made up of small, well-formed chondrules and fairly abundant slightly stained metal. Olivine (Fa15.3-28.2; Cr2O3 is <0.02 wt.%), orthopyroxene (Fs1.9Wo0.7; Fs16.4Wo1.2), subcalcic augite (Fs13.5Wo31.1), augite (Fs4.1Wo42.4), sodic plagioclase, kamacite, chromite, merrillite and troilite. This is a very fresh extraordinarily rare unweathered, unequilibrated H-chondrite. Most H3s you see are weather stained and dark with no fusion crust to speak of. Beautiful clasts of contrasting colors filled with light and dark chondrules share the matrix with abundant inclusions of nickel-iron.

 12000元台幣(sold)



 
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