Locality type: Quarry Classification Species: Muscovite Formula: KAl2 (AlSi3 O10 )(OH)2 Comments: A major accessory of the pegmatite in general, in books up to 45 cm in diameter and 20 cm thick. Books often contain beautiful inclusions of green elbaite and black schorl, as well as hexagonal hematite platelets and flattened magnetite octahedra. Some muscovite crystals are surrounded by overgrowths of lepidolite and schernikite that cleave as a single unit. Habit: pseudo-hexagonal tabular Colour: silvery-white to greenish Quality for species: Good crystals or rich for species - important (!) Abundance at site: Very common Confirmation Validity: Confirmed Confirmation Methods: Visually Identified Associated Minerals Based on Photo Data: Quartz 25 - var Smoky Quartz 3 Albite 21 Beryl 13 Lepidolite 12 Elbaite 12 Fluorapatite 9 Muscovite 9 - var Schernikite 9 Topaz 4 Fluorite 4 - var Chlorophane 4 Microlite Group 3 Columbite-(Fe) 3 Graphite 2 Cookeite 2 Almandine 1 Schorl 1 Tourmaline 1 Data Mineral Data: Click here to view Muscovite data Locality Data: Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA Photo Gallery View Gallery (9 photos) Data Identifiers Mindat Occurrence Record ID: 36946 Long-form Identifier: 1:3:36946:2 GUID (UUID V4 ): 0 Nearest other occurrences of Muscovite
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 1.5km (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 1.9km (1.2 miles) ⓘ Kelsey prospect (Parmalee farm), Haddam, Middlesex County, Connecticut, USA 2.0km (1.2 miles) ⓘ Rock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA 2.3km (1.4 miles) ⓘ Arnold Granite Quarry (General Brainerd Quarry; Great Hill Quarry; Hazelton Quarry; Haddam Quarry; Brookes Quarry), Haddam, Middlesex County, Connecticut, USA 2.4km (1.5 miles) ⓘ Jail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA 2.5km (1.6 miles) ⓘ Forest Ridge Road, Higganum, Haddam, Middlesex County, Connecticut, USA References Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255 Search for references including Muscovite Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA