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Bornite from
Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA

Locality type:Mine
Classification
Species:Bornite
Formula:Cu5FeS4
Comments:Most bornite from Bristol is massive vein material in layers and stringers throughout the vein system, and as rounded blebs in white calcite or on quartz matrix. Crystals rare and specimens not as prevalent as chalcocite.
Habit:typically dodecahedral, less commonly in cubes showing slight modifications. Most crystals are slightly to severely rounded.
Colour:dull black, with blue patina
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Rare
Confirmation
Validity:Believed Valid
References
References:Rocks & Minerals (1995) 70:396-409; Jones (2001)
Associated Minerals Based on Photo Data:
Quartz3 photos of Bornite associated with Quartz at this locality.
Chrysocolla2 photos of Bornite associated with Chrysocolla at this locality.
Chalcocite2 photos of Bornite associated with Chalcocite at this locality.
Blister Copper2 photos of Bornite associated with Blister Copper at this locality.
Chalcopyrite1 photo of Bornite associated with Chalcopyrite at this locality.
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA
Photo GalleryView Gallery (6 photos)
Nearest other occurrences of Bornite
9.7km (6.0 miles) Plainville Trap Rock Quarry (Tilcon New Britain Quarry), Plainville, Hartford Co., Connecticut, USA
14.6km (9.1 miles) State Route 9 - Ellis Street and State Route 72 interchanges (State Route 72 roadcut), New Britain, Hartford Co., Connecticut, USA
19.4km (12.1 miles) Trinity Ridge, Hartford, Hartford Co., Connecticut, USA
24.3km (15.1 miles) Rocky Hill Quarry, Rocky Hill, Hartford Co., Connecticut, USA
26.5km (16.5 miles) Copper Valley Mine (Bellamy's Mine), Cheshire, New Haven Co., Connecticut, USA
27.0km (16.8 miles) Jinny Hill Mine (Cheshire Barite Mine), Cheshire, New Haven Co., Connecticut, USA
28.0km (17.4 miles) Higley Mine, Simsbury Mines, East Granby, Hartford Co., Connecticut, USA
30.7km (19.1 miles) Newgate Copper Mine (Old Newgate Prison), Simsbury Mines, East Granby, Hartford Co., Connecticut, USA
30.7km (19.1 miles) Simsbury Mines, East Granby, Hartford Co., Connecticut, USA
31.7km (19.7 miles) North Hill Mines, Simsbury Mines, East Granby, Hartford Co., Connecticut, USA
 
Mineral and/or Locality  
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