Cassiterite-rh3-44a
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Image: http://www.irocks.com/db_pics/pics/rh3-44a.jpg, Description: http://www.mindat.org/photo-263171.html
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706 x 800 Pixel (101565 Bytes)
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Cassiterite
- Locality: Black Hills, South Dakota, USA (Locality at mindat.org)
- Size: miniature, 5.1 x 4.4 x 4.2 cm
- Cassiterite (twinned)
- Tin ore is very limited in the USA. Therefore, it is rare to see large crystals of the primary tin mineral, cassiterite. This one, in quartz, is doubly terminated, lustrous and twinned, with classic, re-entrant faces. The dark gray crystal measures 3.5 cm in length. This is undoubtedly a major American cassiterite and is by far the best I have seen from this locale. However, the combination of form and matrix makes it unique and really quite astonishing for a US piece. Ex. Richard Hauck Collection.
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Creative Commons Attribution-Share Alike 3.0
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