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
Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Quartz
Formula:SiO2
Comments:Major component of the pegmatite in general, though most of it is the smoky variety, especially the pocket crystals.
Habit:massive
Colour:white to colorless
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Extremely common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Elbaite66
Albite43
- var Cleavelandite14
Muscovite39
- var Schernikite17
Cookeite38
Beryl32
Fluorapatite15
Microcline12
Topaz9
Columbite-(Fe)7
Fluorite6
- var Chlorophane6
Lepidolite5
Microlite Group4
Cassiterite2
Schorl2
Quartz2
- var Smoky Quartz1
- var Amethyst1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Photo GalleryView Gallery (22 photos)
Data Identifiers
Mindat Occurrence Record ID:38368
Long-form Identifier:1:3:38368:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.6km (0.4 miles) Quarry Hill (Brainerd Quarries; Shailor Quarries), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
1.3km (0.8 miles) Tidewater feldspar quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
1.3km (0.8 miles) Thulite locality, Haddam, Middlesex County, Connecticut, USA
1.5km (0.9 miles) Chrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
1.5km (0.9 miles) Knudsen prospects, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
1.5km (1.0 miles) Connecticut Yankee atomic power plant, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
1.6km (1.0 miles) Feldspar quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
1.7km (1.1 miles) Hill above the parsonage (unnamed feldspar quarry), Haddam, Middlesex County, Connecticut, USA
1.9km (1.2 miles) Kelsey prospect (Parmalee farm), Haddam, Middlesex County, Connecticut, USA
1.9km (1.2 miles) Tourmaline locality, Haddam, Middlesex County, Connecticut, USA
References
 
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