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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Prehnite from
Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA


00920490017412436445315.jpg
Prehnite, etc.

Reed's Gap Quarry, Durham, Middlesex County, Connecticut, USA
00920490017412436445315.jpg
Prehnite, etc.

Reed's Gap Quarry, Durham, Middlesex County, Connecticut, USA
01875730017272042676421.jpg
Prehnite, etc.

Reed's Gap Quarry, Durham, Middlesex County, Connecticut, USA
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Fluorapophyllite-(K)11
Calcite4
Babingtonite3
Datolite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:657123
Long-form Identifier:1:3:657123:8
GUID (UUID V4):0
Nearest other occurrences of Prehnite
7.1km (4.4 miles) ⓘZeolite occurrence, Wadsworth Falls, Middlefield, Middlesex County, Connecticut, USA
11.7km (7.3 miles) ⓘPillow lava locality, Meriden, New Haven County, Connecticut, USA
12.3km (7.6 miles) ⓘHubbard Park Quartz locality, Meriden, New Haven County, Connecticut, USA
14.5km (9.0 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
14.8km (9.2 miles) ⓘWhite Rock Mining District, Middletown, Middlesex County, Connecticut, USA
16.9km (10.5 miles) ⓘCheshire Traprock Quarry, Cheshire, New Haven County, Connecticut, USA
17.1km (10.6 miles) ⓘState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA
17.3km (10.8 miles) ⓘState Routes 9 and 372 interchange, Berlin, Hartford County, Connecticut, USA
18.4km (11.4 miles) ⓘHart's Lead Mine, Berlin, Hartford County, Connecticut, USA
19.5km (12.1 miles) ⓘConnecticut Yankee atomic power plant, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
References
Brunet (1980).
Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569
 
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