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Benitoite from
California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA

Description
Type Locality:California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA is the type locality for Benitoite
Comments:Occurs as crystals attached to vein walls in natrolite-filled veins.
Habit:Euhedral and anhedral crystals
Colour:Colorless, sapphire-blue.
UV Fluorescence:Blue (SW UV)
Quality of samples:Excellent - world class for species or very significant. (!!)
Rarity at site:Common
Special Storage/
Display Requirements:
None
Confirmation
Validity:Believed Valid
References
References:Louderback, George Davis & Walter C. Blasdale (1909), Benitoite, its mineralogy, paragenesis and mode of occurrence: University of California, Department of Geological Sciences Bulletin: 5: 331; Louderback, George Davis & Walter C. Blasdale (1907), Benitoite, a new California gem mineral, with chemical analysis by Walter C. Blasdale: University of California, Department of Geological Sciences Bulletin: 5: 149-153; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 102; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 372, 466; Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. Mineralogical Record 8, 442-452.
Associated minerals:
Associates:Aegirine
Albite
Anatase
Baotite
Chalcocite
Digenite
Joaquinite-(Ce)
Jonesite
Natrolite
Data
Mineral Data:Click here to view Benitoite data
Locality Data:Click here to view California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA
Photo GalleryView Gallery (487 photos)
Nearest other occurrences of Benitoite
9.4km (5.8 miles) Victor claim (Victor Mine), Clear Creek area, Picacho Peak, New Idria District, Diablo Range, San Benito Co., California, USA
115.2km (71.6 miles) Lazard area (1), Lost Hills, Kern Co., California, USA
137.5km (85.4 miles) Esquire No. 7 claim, Big Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
142.4km (88.5 miles) Baumann prospect (Bauman Ranch), Dumtah, Tulare Co., California, USA
145.0km (90.1 miles) Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
164.5km (102.2 miles) Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House District, East Belt, Mariposa Co., California, USA
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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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