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989  Galena altering to Anglesite and Cerrusite Sunshine #1 Tunnel, Blanchard Claims, Bingham, New Mexico miniature 3.3 x 2.4 x 1.2 cm I love these things, and I collected this one myself! The psuedomorphism is interesting. As Ray DeMark explained, the unit cell size changes along the way, expanding as the galena is replaced. Hence the volume of the overall crystal must increase, resulting in a splitting of the original galena form. This specimen is a good example of this effect. labelMineral Occurances
label created: 2010-03-30 18:20:36; modified: 2010-03-30 18:20:36 |
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