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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Stilbite Subgroup from
Pine Rock Quarry (Farnham Quarry), Hamden, New Haven County, Connecticut, USA


Locality type:Quarry
Classification
Species:'Stilbite Subgroup' (not an IMA approved species)
Formula:M6-7[Al8-9Si27-28O72] · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Stilbite Subgroup data
Locality Data:Click here to view Pine Rock Quarry (Farnham Quarry), Hamden, New Haven County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:657166
Long-form Identifier:1:3:657166:5
GUID (UUID V4):0
Nearest other occurrences of Stilbite Subgroup
10.5km (6.5 miles) ⓘMount Carmel Trap Rock Quarry, Hamden, New Haven County, Connecticut, USA
12.6km (7.8 miles) ⓘMesa Drive roadcuts, Bethany, New Haven County, Connecticut, USA
13.1km (8.2 miles) ⓘNorth Branford Quarry, North Branford, New Haven County, Connecticut, USA
13.5km (8.4 miles) ⓘBarrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven County, Connecticut, USA
15.8km (9.8 miles) ⓘHaynes Materials Quarry, Naugatuck, New Haven County, Connecticut, USA
16.1km (10.0 miles) ⓘState Route 67 construction site, Oxford, New Haven County, Connecticut, USA
17.9km (11.1 miles) ⓘO and G quarry # 3, Prospect, New Haven County, Connecticut, USA
18.3km (11.4 miles) ⓘStony Creek Quarry (Norcross Granite Gneiss Rock Quarries; Castellucci Quarry), Branford, New Haven County, Connecticut, USA
23.3km (14.5 miles) ⓘReed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA
23.8km (14.8 miles) ⓘWoodhaven, Waterbury, New Haven County, Connecticut, USA
References
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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