mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
1 item @ $25.00   30:00

Mineralpedia Details for Uranopolycrase

Reset

Uranopolycrase

Uranopolycrase

Named for its relation to polycrase-(Y) and for the uranium in its composition. In only a couple of locations worldwide, Uranopolycrase  occurs at its type locality on Elba Island, Italy in a zoned pegmatite vein near a granodiorite contact. Uranopolycrase is quite radioactive.

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

Formula
(U,Y)(Ti,Nb,Ta)2(O,OH)6 
Crystal System
Orthorhombic 
Crystal Habit
Euhedral Crystals 
Cleavage
Good, None, None 
Luster
Adamantine 
Color
brown red 
Streak
grayish brown 
Class
Orthorhombic - Dipyramidal 
Hardness
5-6 
WebMineral
View Uranopolycrase 
Mindat
View Uranopolycrase 

Uranopolycrase from Cavetta Bassa, Elba Isle, Livorno Province, Tuscany, Italy

Uranopolycrase
            from Cavetta Bassa, Elba Isle, Livorno Province, Tuscany, Italy Brown to black, paper thin, elongated crystals to 1mm.
Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2025 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map