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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Malachite from
Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA


Locality type:Road Cutting
Classification
Species:Malachite
Formula:Cu2(CO3)(OH)2
Formation:Secondary
Comments:A typical alteration of chalcopyrite. Included in a list of species with a question mark and no supporting details.
Colour:green
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Rare
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Malachite data
Locality Data:Click here to view Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:657237
Long-form Identifier:1:3:657237:2
GUID (UUID V4):0
Nearest other occurrences of Malachite
5.0km (3.1 miles) ⓘReynolds Bridge, Thomaston, Litchfield County, Connecticut, USA
12.2km (7.6 miles) ⓘBristol Copper Mine, Bristol, Hartford County, Connecticut, USA
12.5km (7.8 miles) ⓘTown Farm Road, Litchfield, Litchfield County, Connecticut, USA
16.8km (10.4 miles) ⓘHighridge Road, Avon, Hartford County, Connecticut, USA
17.4km (10.8 miles) ⓘWoodbury pegmatite quarry (Judson Quarry), Woodbury, Litchfield County, Connecticut, USA
18.6km (11.6 miles) ⓘHuckleberry Hill, Avon, Hartford County, Connecticut, USA
20.0km (12.4 miles) ⓘPlainville Trap Rock Quarry (Tilcon New Britain Quarry), Plainville, Hartford County, Connecticut, USA
20.3km (12.6 miles) ⓘClark farm (Holler's Mine), Southington, Hartford County, Connecticut, USA
20.5km (12.7 miles) ⓘJourney Road quarry, Plainville, Hartford County, Connecticut, USA
21.5km (13.4 miles) ⓘState Route 4 road cut, Farmington, Hartford County, Connecticut, USA
References
Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.
 
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