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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

Mineral Species
Species:Benitoite
Formula:BaTi(Si3O9)
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.
Luminescent properties: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
Associated Minerals Based on Photo Data:
Neptunite315 photos of Benitoite associated with Neptunite at this locality.
Natrolite254 photos of Benitoite associated with Natrolite at this locality.
Joaquinite-(Ce)112 photos of Benitoite associated with Joaquinite-(Ce) at this locality.
Crossite44 photos of Benitoite associated with Crossite at this locality.
Joaquinite Group13 photos of Benitoite associated with Joaquinite Group at this locality.
Djurleite9 photos of Benitoite associated with Djurleite at this locality.
Glaucophane5 photos of Benitoite associated with Glaucophane at this locality.
Sérandite3 photos of Benitoite associated with Sérandite at this locality.
Chalcocite2 photos of Benitoite associated with Chalcocite at this locality.
Bario-orthojoaquinite2 photos of Benitoite associated with Bario-orthojoaquinite at this locality.
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 (517 photos)
Nearest other occurrences of Benitoite
9.4km (5.8 miles) A Victor claim (Victor Mine), Clear Creek area, Picacho Peak, New Idria District, Diablo Range, San Benito Co., California, USA
115.2km (71.6 miles) B Lazard area (1), Lost Hills, Kern Co., California, USA
137.5km (85.4 miles) C Esquire No. 7 claim, Big Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
142.4km (88.5 miles) D Baumann prospect (Bauman Ranch), Dumtah, Tulare Co., California, USA
145.0km (90.1 miles) E Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA
164.5km (102.2 miles) F Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House District, East Belt, Mariposa Co., California, USA
Mineral and/or Locality  
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