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Glossary Page 2
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sphalerite
- This mineral occurs in yellow, brown, red, green, black; rarely white or
pale gray. Being soft (hardness 3.5 - 4) and easily cleaved, it is
unsuitable as a gem material. However rare transparent and yellow to
brownish material are cut into gems for collectors.
Sources: Common occurrence Mexico and Western United States.
Sphalerite is the principal ore of zinc. |
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Below are some reference books that I have found very
useful. You might like to take a look.
Kathleen
Practical Gemology by Robert Webster
Buy it
today!
Crystal Healing
by Roger C. Croxson
Buy it
today!
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