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Microcline from
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA


Locality type:Quarry
Classification
Species:Microcline
Formula:K(AlSi3O8)
Comments:Perthitic crystals 1 to 5 feet long, some partly replaced and veined with albite and other minerals. Pocket crystals uncommon but typically etched and partly replaced/overgrown by albite. Rarely as a yellow, granular pseudomorph after spodumene
Habit:prismatic, anhedral, rarely pseudomorphous after spodumene
Colour:grayish white to light buff-brown, yellow
Luminescent properties:red, pale blue
Abundance at site:Common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Albiteβ“˜17 photos of Microcline associated with Albite at this locality.
Cleavelanditeβ“˜14 photos of Microcline associated with Cleavelandite at this locality.
Muscoviteβ“˜2 photos of Microcline associated with Muscovite at this locality.
Spessartineβ“˜1 photo of Microcline associated with Spessartine at this locality.
Spodumeneβ“˜1 photo of Microcline associated with Spodumene at this locality.
Fluorapatiteβ“˜1 photo of Microcline associated with Fluorapatite at this locality.
Data
Mineral Data:Click here to view Microcline data
Locality Data:Click here to view Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:130905
Long-form Identifier:1:3:130905:8
GUID (UUID V4):619e4d50-0fee-4f6b-ab14-6592af174fde
Nearest other occurrences of Microcline
4.3km (2.7 miles) β“˜Schorl locality, Wilton, Fairfield County, Connecticut, USA
4.8km (3.0 miles) β“˜Redding Glen (Redding Ridge), Redding (Reading), Fairfield County, Connecticut, USA
5.2km (3.2 miles) β“˜Ridgefield, Fairfield County, Connecticut, USA
6.1km (3.8 miles) β“˜Redding (Reading), Fairfield County, Connecticut, USA
6.9km (4.3 miles) β“˜Titicus Mica Quarry, Ridgefield, Fairfield County, Connecticut, USA
7.2km (4.5 miles) β“˜Casey Quarry (Ridgefield pegmatite), Ridgefield, Fairfield County, Connecticut, USA
12.1km (7.5 miles) β“˜Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield County, Connecticut, USA
12.1km (7.5 miles) β“˜Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA
13.1km (8.1 miles) β“˜Captain Cook's Quarry (Purdy Station Quarry), Newtown, Fairfield County, Connecticut, USA
14.3km (8.9 miles) β“˜New Canaan, Fairfield County, Connecticut, USA
References
 
Mineral and/or Locality  
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