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Virgin Valley District, Humboldt Co., Nevada, USA
© 2001 John H. Betts
| A variety of Precious Opal The most precious kind of Opal, this variety of precious opal has a dark background colour. |
Classification of Black Opal | |||
| mindat.org URL: | http://www.mindat.org/min-7998.html Please feel free to link to this page. | ||
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Other Names for Black Opal | |||
| Synonyms: |
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| Traditional Chinese names: |
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Other Information | |||
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. | ||
References for Black Opal | |||
| Reference List: | Jones, J.B. and E.R. Segnit (1971), The nature of opal. I Nomenclature and constituent phases. Journal of the Geological Society of Australia: 18: 57-68. Anal. Chem. Acta (1994): 286: 107. Lapis Extra No. 10, Opal (1996). | ||
Internet Links for Black Opal | |||
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Localities for Black Opal | |||
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