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Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine), New Idria District, Diablo Range, San Benito Co., California, USA

A gemstone and specimen mine located near Santa Rita Peak at the headwaters of the San Benito River and New Idria. Mineralization is natrolite veins cutting a glaucophane schist inclusion in a serpentinite body.

Note: The majority of specimens from this locality have been prepared by dissolving away the enclosing natrolite with hydrochloric acid.



References:
- Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. The Mineralogical Record 8, 442-452

- Wise, W.S. & Pabst, A. (1977): Jonesite a new mineral from the Benitoite Gem mine, San Benito County, California. The Mineralogical Record 8, 453-456





Map Reference: 36°20'10"N , 120°36'19"W

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Mineral List:
Actinolite
Aegirine
Albite
Analcime
Andradite
var: Melanite

'Apatite'
Aragonite
Baotite
Bario-orthojoaquinite (TL)
Barioperovskite (TL)
Benitoite (TL)
Calcite
Chalcocite
'Chlorite Group'
Chrysotile
Crossite
Digenite
Diopside
Djurleite
Fresnoite
Glaucophane
Joaquinite-(Ce) (TL)
Jonesite (TL)
Natrolite
Neptunite
Orthojoaquinite-(Ce) (TL)
Perovskite
Pyrite
Sérandite
Silver
'Unnamed (Ba Titanate)'
'Unnamed (Ba Titanate II)'
Vesuvianite


33 entries listed. 27 valid minerals. 6 type localities (valid minerals).

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Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in California, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 21st Nov 2009 13:55:01