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Grossular from
Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA


Locality type:Park
Classification
Species:Grossular
Formula:Ca3Al2(SiO4)3
Comments:Accessory in calc-silicate layers in the marble. Well-formed, gemmy crystals to 1.5 cm or so. Reported by Shannon (1921b) as "garnet" thus: "Brownish red granular garnet occurs both in the main pit and in the lime-kiln opening in nodular or lenticular masses in marble which may reach a foot in greatest diameter. Where such masses have had the surrounding calcite dissolved away small dodecahedral crystals are revealed."
Habit:dodecahedral
Colour:cinnamon to clove brown
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Raman Spectroscopy
Data
Mineral Data:Click here to view Grossular data
Locality Data:Click here to view Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:843294
Long-form Identifier:1:3:843294:0
GUID (UUID V4):0
Nearest other occurrences of Grossular
0.4km (0.2 miles) ⓘOld Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
17.2km (10.7 miles) ⓘBaldwin Quarry (Milford Quarry), Milford, New Haven County, Connecticut, USA
18.0km (11.2 miles) ⓘWest Redding grossular locality, Redding, Fairfield County, Connecticut, USA
36.0km (22.4 miles) ⓘWoodhaven, Waterbury, New Haven County, Connecticut, USA
37.3km (23.1 miles) ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
40.5km (25.2 miles) ⓘStony Creek Quarry (Norcross Granite Gneiss Rock Quarries; Castellucci Quarry), Branford, New Haven County, Connecticut, USA
42.4km (26.3 miles) ⓘReynolds Bridge, Thomaston, Litchfield County, Connecticut, USA
44.6km (27.7 miles) ⓘHungry Hill mineral occurrence, Guilford, New Haven County, Connecticut, USA
47.3km (29.4 miles) ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA
54.3km (33.8 miles) ⓘPegmatite quarry and ultramafic rock, Harwinton, Litchfield County, Connecticut, USA
References
Dave Bodnar collection.
Shannon, Earl V. (1921b), Some Minerals from the Old Tungsten Mine at Long Hill in Trumbull, Connecticut. Proceedings U.S. National Museum: 58(2348): 469-482.
 
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