Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Wülfingite from
Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK


01300530017271927644603.jpg
Wülfingite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
01300530017271927644603.jpg
Wülfingite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
01300530017271927644603.jpg
Wülfingite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Locality type:Quarry
Classification
Species:Wülfingite
Formula:Zn(OH)2
Habit:Bladed radial star-like
Colour:Colourless
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Confirmation Details:Where Tested and Reference ID: NHM London
Associated Minerals:
Associates:Ashoverite
Fluorite
Data
Mineral Data:Click here to view Wülfingite data
Locality Data:Click here to view Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Data Identifiers
Mindat Occurrence Record ID:14399
Long-form Identifier:1:3:14399:8
GUID (UUID V4):0
References
Ford, T., Sarjeant, A., Smith, M. (1993) The minerals of the Peak district of Derbyshire. UK Journal of Mines and Minerals 13, Rockbottom Publications. 16-55
Rust, Steve A. (1994) Seltene Mineralien aus dem Milltown-Steinbruch bei Ashover, Derbyshire, Großbritannien [Rare minerals from the Milltown Quarry near Ashover, Derbyshire, UK]. Lapis, 19 (12). 13-17; 58
 
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