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“死牛” 中菱鐵礦,非常罕見 - 10 g
編號 83303629
編號 83303629
NO RESERVE!!
Shipping insured.
Pica glass was probably formed when an asteroid or comet hit the surface of the earth like a huge atomic bomb. The surface was partially or totally melted forming the glass.
Pica Glass contains abundant silt-sized and finer meteoritical particles that occur as individual phases and complex assemblages typically associated with vesicles [2,3]. They range from buchwaldite (NaCaPO4), Ni-bearing troilite (FeS), and oldhamite (CaS) to rock fragments composed of Mg-Fe silicates, corundum-bearing perovskite (CaTiO3), and serpentin-ite.
Here we offer a nice specimen of the Pica glass of 71 grams.