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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Unnamed (Tetragonal Pb Oxide Hydrate) from
Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK


02552190017271929558360.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03234790017271929549326.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03141870017271929565866.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
02552190017271929558360.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03234790017271929549326.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03141870017271929565866.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
02552190017271929558360.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03234790017271929549326.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
03141870017271929565866.jpg
Unnamed (Tetragonal Pb Oxide Hydrate), etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Locality type:Quarry
Classification
Species:'Unnamed (Tetragonal Pb Oxide Hydrate)' (not an IMA approved species)
Formula:Pb3O2(OH)2
Comments:0.7mm tetragonal bipyramids
Habit:Tetragonal
Colour:Grey white to creamy
Luminescent properties:non
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Cerussite
Fluorite
Litharge
Massicot
Associated Minerals Based on Photo Data:
Fluorite2
Calcite1
Hydrocerussite1
Litharge1
Data
Mineral Data:Click here to view Unnamed (Tetragonal Pb Oxide Hydrate) data
Locality Data:Click here to view Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:54569
Long-form Identifier:1:3:54569:1
GUID (UUID V4):0
References
58 (in German).
Nat Hist Museum London, S Rust collection
S.A., Rust (1991) The Minerals of Milltown Quarry, Ashover, Derbyshire. UK Journal of Mines and Minerals 10, Rockbottom Publications. 14-19
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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