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


Locality type:Quarry
Classification
Species:Microcline var: Amazonite
Formula:K(AlSi3O8)
Comments:American Museum of Natural History collection contains a pale blue-green microcline crystal 20 cm across.
Habit:blocky to prismatic
Colour:pale lime-green to blue-green
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Muscovite2
- var Schernikite2
Lepidolite1
Data
Mineral Data:Click here to view Amazonite data
Locality Data:Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:767342
Long-form Identifier:1:3:767342:9
GUID (UUID V4):0
Nearest other occurrences of Amazonite
4.4km (2.7 miles) ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA
16.8km (10.5 miles) ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
17.1km (10.6 miles) ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA
22.3km (13.9 miles) ⓘPaxton Way, Glastonbury, Hartford County, Connecticut, USA
79.4km (49.3 miles) ⓘMoonstone Beach, South Kingstown, Washington County, Rhode Island, USA
82.1km (51.0 miles) ⓘKingston Hill, South Kingstown, Washington County, Rhode Island, USA
References
Scovil, Jeffrey A. (1992) Famous Mineral Localities: The Gillette Quarry, Haddam Neck, Connecticut. The Mineralogical Record, 23 (1) 19-80
 
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