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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Quartz from
Jail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA


04001250017371732219616.jpg
Quartz, etc.

Jail Hill Road locality, Haddam, Middlesex County, Connecticut, USA
04001250017371732219616.jpg
Quartz, etc.

Jail Hill Road locality, Haddam, Middlesex County, Connecticut, USA
04577970017361078475350.jpg
Quartz, etc.

Jail Hill Road locality, Haddam, Middlesex County, Connecticut, USA
Classification
Species:Quartz
Formula:SiO2
Comments:Massive material predominates, but a tiny prismatic crystals occur in tiny pockets in the massive spessartine, with crystals of the latter.
Habit:mostly anhedral, micro prismatic crystals in tiny pockets
Colour:white
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Very common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Spessartine4
Microcline3
Albite3
Muscovite2
Tephroite1
Jacobsite1
Uraninite1
Autunite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Jail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:706190
Long-form Identifier:1:3:706190:5
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.0km (0.6 miles) ⓘGulf Quarry, Haddam, Middlesex County, Connecticut, USA
1.0km (0.6 miles) ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
1.0km (0.6 miles) ⓘHazen quarry (Epidote locality), Haddam, Middlesex County, Connecticut, USA
1.3km (0.8 miles) ⓘLong Hill Quarry, Haddam, Middlesex County, Connecticut, USA
1.4km (0.9 miles) ⓘHill above the parsonage (unnamed feldspar quarry), Haddam, Middlesex County, Connecticut, USA
1.4km (0.9 miles) ⓘCivilian Conservation Corps Quarry (CCC Quarry; Smith Quarry; Turkey Hill quarry lot), Haddam, Middlesex County, Connecticut, USA
1.5km (0.9 miles) ⓘNemo's Quarry, Haddam, Middlesex County, Connecticut, USA
1.5km (1.0 miles) ⓘCivilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex County, Connecticut, USA
1.6km (1.0 miles) ⓘChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
1.6km (1.0 miles) ⓘConnecticut Yankee atomic power plant, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
References
Seaman, David M. and Robert P. Gallant (1960): SPESSARTITE GARNET WITH HEXOCTAHEDRAL FACES FROM JAIL HILL, HADDAM, CONNECTICUT Rocks & Minerals, Vol. 35, Nos. 9-10, pp. 445-8.
 
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