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Mineralpedia Details for Pabstite

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Pabstite

Pabstite

Named after Dr. Adolf Pabst, a former Professor of Mineralogy at the University of California in the United States. Pabstite is a rare mineral found only in the United States as well as at some newer localities in Tajikistan and Mexico. It occurs at its type locality in the Kalkar quarry in California as a filling in fractures and as disseminated grains in silicon-rich limestone that and been recrystallized and has evidence of contact metamorphism. Pabstite will fluoresce white with blue tones under short-wave ultraviolet light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/pabstite.pdf

Formula
BaSnSi3O9 
Crystal System
Hexagonal 
Crystal Habit
Anhedral Grains 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Hexagonal - Ditrigonal Dipyramidal 
Hardness
WebMineral
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Mindat
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Pabstite from Kalkar quarry, Santa Cruz Co., California, United States

Pabstite
            from Kalkar quarry, Santa Cruz Co., California, United States

Nondescript white crystal to 5-6mm in matrix. You cannot really discern the crystal until you place an ultraviolet light under short wave on the specimen. The photo shows a strong response to UV SW, a typical bright blue.

Click thumbnail images for larger view.

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