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Mineralpedia Details for Quenselite

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Quenselite

Quenselite

Named in honor of Professor Perry Dudgeon Quensel, who was a Swedish mineralogist and petrologist at the University of Stockholm at Stockholm, Sweden.  Quenselite is found in just a few reported locations including Sweden, India, and Scotland. Mindat reports another set of localities that include China, Japan, Sweden, and the USA. The one locality that can be agreed upon is the type locality at Långban in Sweden. At the type locality, Quenselite occurs within “a metamorphosed Fe-Mn orebody.”

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

Formula
PbMn3+O2(OH) 
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Earthy (Dull) 
Color
pitch black 
Streak
dark brownish gray 
Class
Monoclinic - Sphenoidal 
Fracture
Flexible 
Hardness
2.5 
WebMineral
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Mindat
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Quenselite from Långban, Filipstad, Värmland, Sweden

Quenselite
            from Långban, Filipstad, Värmland, Sweden
Special Info
Type Locality

Jet black and shiny thick tabular crystals to Quenselite. Excellent crystals and numerous of them!!

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