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Chlorite Group from
Roncari Quarry, East Granby, Hartford County, Connecticut, USA


03689850017362257235156.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
03237390017272024382278.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
00749700017272024458634.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
09457730017272024417746.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
05591570017362257224759.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
03237390017272024382278.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
00749700017272024458634.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
09457730017272024417746.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
03689850017362257235156.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
03237390017272024382278.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
06495870017364589415150.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
01563660017272024516796.jpg
Chlorite Group, etc.

Roncari Quarry, East Granby, Hartford County, Connecticut, USA
Locality type:Quarry
Classification
Species:'Chlorite Group' (not an IMA approved species)
Comments:Fine-grained coatings and/or replacements of other minerals like prehnite, fluorapophyllite-(K), datolite, calcite and quartz. EDS shows major Mg, Al, and Fe, suggesting an intermediate clinochlore-chamosite series species(XRD confirmed).
Colour:olive green
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Fluorapophyllite-(K)31
Calcite23
Quartz20
Prehnite10
Datolite6
Stilpnomelane4
Sphalerite3
Anhydrite2
Babingtonite1
Data
Mineral Data:Click here to view Chlorite Group data
Locality Data:Click here to view Roncari Quarry, East Granby, Hartford County, Connecticut, USA
Photo GalleryView Gallery (25 photos)
Data Identifiers
Mindat Occurrence Record ID:528199
Long-form Identifier:1:3:528199:2
GUID (UUID V4):0
Nearest other occurrences of Chlorite Group
0.9km (0.6 miles) ⓘState Route 20 road cut, East Granby, Hartford County, Connecticut, USA
22.7km (14.1 miles) ⓘSatan's Kingdom talc deposits, New Hartford, Litchfield County, Connecticut, USA
23.9km (14.9 miles) ⓘFarmington Trap Rock Quarry, Farmington, Hartford County, Connecticut, USA
29.6km (18.4 miles) ⓘBurgundy Hill Quarry, Tolland, Tolland County, Connecticut, USA
33.0km (20.5 miles) ⓘMountain Top Trucking quarry, Torrington, Litchfield County, Connecticut, USA
37.0km (23.0 miles) ⓘState Routes 8 and 118 interchange, Harwinton, Litchfield County, Connecticut, USA
37.2km (23.1 miles) ⓘWest Torrington nickel mines (Coe Copper Mine; Hodges Mine; Barber Mine; Torrington Nickel Mine), Torrington, Litchfield County, Connecticut, USA
37.4km (23.2 miles) ⓘState Route 2 roadcut, Marlborough, Hartford County, Connecticut, USA
38.1km (23.7 miles) ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA
39.0km (24.3 miles) ⓘSoapstone quarry, Torrington, Litchfield County, Connecticut, USA
References
Wolfe, C. W., Vilks, I. (1960) Pseudomorphes after datolite, prehnite and apophyllite from East Granby, Connecticut. American Mineralogist, 45 (3-4) 443-446
Walter, Michael R.; Dixon, Kevin (2026) Minerals from the Roncari Quarry, East Granby, Hartford County, Connecticut. Rocks & Minerals, 101 (2). doi:10.1080/00357529.2026.2581546
 
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