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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Hemimorphite from
Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK


05365070017271998931607.jpg
Hemimorphite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
05394750017271998501718.jpg
Hemimorphite, etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
05365070017271998931607.jpg
Hemimorphite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
05394750017271998501718.jpg
Hemimorphite, etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
05365070017271998931607.jpg
Hemimorphite

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
05394750017271998501718.jpg
Hemimorphite, etc.

Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Locality type:Quarry
Classification
Species:Hemimorphite
Formula:Zn4Si2O7(OH)2 · H2O
Comments:Crystal groups to 2mm, and as very thin crusts.
Habit:Radial compact crystal groups.
Colour:Colourless to white
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Smithsonite1
Sweetite1
Data
Mineral Data:Click here to view Hemimorphite data
Locality Data:Click here to view Milltown Quarry, Milltown, Ashover, North East Derbyshire District, Derbyshire, England, UK
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:14387
Long-form Identifier:1:3:14387:3
GUID (UUID V4):0
Nearest other occurrences of Hemimorphite
5.8km (3.6 miles) ⓘMatlock, Derbyshire Dales District, Derbyshire, England, UK
6.9km (4.3 miles) ⓘRutland Cave Mine (Rutland Mine; Nestus Mine), Heights of Abraham, Matlock Bath, Derbyshire Dales District, Derbyshire, England, UK
7.3km (4.5 miles) ⓘDevonshire Cavern, Matlock, Derbyshire Dales District, Derbyshire, England, UK
7.3km (4.5 miles) ⓘMasson Hill Quarry, Matlock, Derbyshire Dales District, Derbyshire, England, UK
7.4km (4.6 miles) ⓘRoyal mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK
7.4km (4.6 miles) ⓘMasson Hill and mines, Matlock, Derbyshire Dales District, Derbyshire, England, UK
7.4km (4.6 miles) ⓘWapping Mine, Matlock Bath, Derbyshire Dales District, Derbyshire, England, UK
7.5km (4.7 miles) ⓘCumberland mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK
8.1km (5.0 miles) ⓘBall Eye Quarry, Bonsall, Derbyshire Dales District, Derbyshire, England, UK
9.0km (5.6 miles) ⓘMillclose Mine, South Darley, Derbyshire Dales District, Derbyshire, England, UK
References
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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