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Almandine from
Roebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA


Locality type:Quarry
Classification
Species:Almandine
Formula:Fe32+Al2(SiO4)3
Comments:An accessory in the pegmatites, also abundant subhedral metacrysts of garnet in the schist adjacent to the contacts with pegmatite. Januzzi (1959) reports finding in one isolated pegmatite mass, scores of two types of garnet crystals having both distinct dodecahedral and trapezohedral forms. Ewell (1937) writes: "The garnets were extra large, some weighing one pound each."
Habit:trapezohedral and rhombic dodecahedral
Colour:maroon to nearly black
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz7
Muscovite6
Albite3
Uraninite2
Zircon2
Beryl1
Uranophane1
Gummite1
Meta-autunite1
Data
Mineral Data:Click here to view Almandine data
Locality Data:Click here to view Roebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA
Photo GalleryView Gallery (13 photos)
Data Identifiers
Mindat Occurrence Record ID:646586
Long-form Identifier:1:3:646586:5
GUID (UUID V4):0
Nearest other occurrences of Almandine
12.5km (7.7 miles) Rockside Quarry, Mine Hill, Roxbury, Litchfield County, Connecticut, USA
13.0km (8.1 miles) Roxbury Granite Quarry (upper quarry), Mine Hill, Roxbury, Litchfield County, Connecticut, USA
16.3km (10.1 miles) Rocky Mountain Road garnet prospect, Roxbury, Litchfield County, Connecticut, USA
18.8km (11.7 miles) Berry Road kyanite locality, Roxbury, Litchfield County, Connecticut, USA
19.9km (12.4 miles) Green's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA
20.1km (12.5 miles) Ilmenite locality, Bridgewater, Litchfield County, Connecticut, USA
21.2km (13.1 miles) Sachem Road area, Southbury, New Haven County, Connecticut, USA
22.7km (14.1 miles) Nonnewaug River Industrial Park, Woodbury, Litchfield County, Connecticut, USA
23.0km (14.3 miles) U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
23.5km (14.6 miles) Green Mountain Quarry, West Cornwall, Cornwall, Litchfield County, Connecticut, USA
References
 
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