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Calcite from
Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut, USA

Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Comments:A variety of forms and sizes occur, most commonly rhombohedral and scalenohedral, with rhombic overgrowths up to 4 cm on scalenohedral cores showing a pale rose color and frosty luster associated with sprays of needle quartz epimorphic on dissolved anhydrite. Tabular butterfly twins to 5mm or so also occur.
Habit:rhombohedral, scalenohedral, tabular butterfly twins on {01bar12}
Colour:white, pale rose
Luminescent properties:orange-red
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Very common
Confirmation
Validity:Believed Valid
References
References:Wolfe, C. W. and Vilks, I. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. Am. Mineral. 45, 443-447.; Rocks & Minerals (1995) 70:396-409
Associated Minerals Based on Photo Data:
Quartz75 photos of Calcite associated with Quartz at this locality.
Hematite37 photos of Calcite associated with Hematite at this locality.
Prehnite30 photos of Calcite associated with Prehnite at this locality.
Stilpnomelane12 photos of Calcite associated with Stilpnomelane at this locality.
Babingtonite9 photos of Calcite associated with Babingtonite at this locality.
Chlorite Group7 photos of Calcite associated with Chlorite Group at this locality.
Apophyllite7 photos of Calcite associated with Apophyllite at this locality.
Goethite6 photos of Calcite associated with Goethite at this locality.
Datolite5 photos of Calcite associated with Datolite at this locality.
Sphalerite4 photos of Calcite associated with Sphalerite at this locality.
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut, USA
Nearest other occurrences of Calcite
0.9km (0.6 miles) A State Route 20 road cut, East Granby, Hartford Co., Connecticut, USA
4.3km (2.7 miles) B State Route 189 road cut, Tariffville Gorge, Bloomfield, Hartford Co., Connecticut, USA
4.4km (2.7 miles) C Tariffville Gorge, Bloomfield, Hartford Co., Connecticut, USA
4.7km (2.9 miles) D Route 187 Road Cut, Bloomfield, Hartford Co., Connecticut, USA
12.3km (7.6 miles) E Talcott Mountain (King Phillip's Cave), Simsbury, Hartford Co., Connecticut, USA
17.1km (10.6 miles) F Talcott Mountain, Avon, Hartford Co., Connecticut, USA
20.8km (12.9 miles) G Westfield, Hampden Co., Massachusetts, USA
21.4km (13.3 miles) H Trinity Ridge, Hartford, Hartford Co., Connecticut, USA
23.9km (14.9 miles) I Farmington Trap Rock Quarry, Farmington, Hartford Co., Connecticut, USA
24.5km (15.2 miles) J State Route 4 road cut, Farmington, Hartford Co., Connecticut, USA
24.7km (15.3 miles) K Balf Quarry, Newington, Hartford Co., Connecticut, USA
25.1km (15.6 miles) L State Route 9 & State Route 71 Interchange, New Britain, Hartford Co., Connecticut, USA
25.5km (15.9 miles) M The Woodlands, Newington, Hartford Co., Connecticut, USA
25.8km (16.1 miles) N Fenn Road, Newington, Hartford Co., Connecticut, USA
26.9km (16.7 miles) O Tomasso Quarry (Tilcon Tomasso Quarry; Tilcon Quarry; Arborio Quarry), Farmington, Hartford Co., Connecticut, USA
27.0km (16.8 miles) P Arute Field, New Britain, Hartford Co., Connecticut, USA
27.0km (16.8 miles) Q Newington, Hartford Co., Connecticut, USA
27.9km (17.3 miles) R 2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford Co., Connecticut, USA
28.7km (17.8 miles) S Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA
30.2km (18.8 miles) T North Mountain Road, Plainville, Hartford Co., Connecticut, USA
30.2km (18.8 miles) U State Route 372 construction site, Plainville, Hartford Co., Connecticut, USA
30.2km (18.8 miles) V Interstate 91 and Interstate 291 interchange, Rocky Hill, Hartford Co., Connecticut, USA
30.3km (18.8 miles) W Trap Rock quarry, Plainville, Hartford Co., Connecticut, USA
30.6km (19.0 miles) X Rocky Hill Quarry, Rocky Hill, Hartford Co., Connecticut, USA
31.2km (19.4 miles) Y Plainville Trap Rock Quarry (Tilcon New Britain Quarry), Plainville, Hartford Co., Connecticut, USA
31.5km (19.6 miles) Z State Route 9 - Ellis Street and State Route 72 interchanges (State Route 72 roadcut), New Britain, Hartford Co., Connecticut, USA
32.9km (20.4 miles) 0 Hurley Hill, Bristol, Hartford Co., Connecticut, USA
34.1km (21.2 miles) 1 Hart's Lead Mine, Berlin, Hartford Co., Connecticut, USA
34.9km (21.7 miles) 2 State Routes 9 and 372 interchange, Berlin, Hartford Co., Connecticut, USA
35.1km (21.8 miles) 3 Torrington (Wolcottville), Litchfield Co., Connecticut, USA
35.4km (22.0 miles) 4 Clark farm (Holler's Mine), Southington, Hartford Co., Connecticut, USA
37.0km (23.0 miles) 5 State Route 8 and State Route 118 interchange, Harwinton, Litchfield Co., Connecticut, USA
38.1km (23.7 miles) 6 Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield Co., Connecticut, USA
38.2km (23.7 miles) 7 Loudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire Co., Massachusetts, USA
39.1km (24.3 miles) 8 Hawthorne Drive, Berlin, Hartford Co., Connecticut, USA
39.2km (24.4 miles) 9 Becker Quarry (Becker's Quarry), West Willington, Willington, Tolland Co., Connecticut, USA
Mineral and/or Locality  
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