Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Quartz from
U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA


Locality type:Road Cutting
Classification
Species:Quartz
Formula:SiO2
Formation:Primary, Secondary
Comments:Mostly rock forming in pegmatite, granite gneiss and quartzite, but small to micro crystals found in Alpine clefts with dolomite or schorl.
Habit:elongated prismatic
Colour:milky, rose, smoky, clear
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Albite11
- var Cleavelandite1
Schorl5
Opal5
- var Opal-AN5
Vivianite5
Elbaite4
Microcline4
Metaswitzerite4
Dolomite3
Beryl2
Tantalite-(Mn)2
Spodumene2
Chrysoberyl2
Chalcopyrite2
Scapolite2
Triphylite1
Pyrite1
Uraninite1
Fluorapatite1
Clinozoisite1
Datolite1
K Feldspar1
- var Adularia1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:810531
Long-form Identifier:1:3:810531:8
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.3km (1.4 miles) Danbury beryl prospect, Brookfield, Fairfield County, Connecticut, USA
3.0km (1.8 miles) Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA
4.0km (2.5 miles) Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA
4.8km (3.0 miles) Ilmenite locality, Bridgewater, Litchfield County, Connecticut, USA
6.7km (4.2 miles) North Street mall, Danbury, Fairfield County, Connecticut, USA
7.2km (4.5 miles) Cook Quarry on Harry Wiley Farm, Newtown, Fairfield County, Connecticut, USA
7.4km (4.6 miles) Grace Feldspar Mine, Newtown, Fairfield County, Connecticut, USA
7.9km (4.9 miles) Danburite type locality, Danbury, Fairfield County, Connecticut, USA
8.3km (5.2 miles) Quarry Pond quartz quarry, Southbury, New Haven County, Connecticut, USA
8.9km (5.5 miles) Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA
References
 
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