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Manganese Dendrites from
Case Quarries, Portland, Middlesex Co., Connecticut, USA

Mineral Species
Species:Manganese Oxides var: Manganese Dendrites
Description
Habit:dendritic coatings
Colour:black to dark brown
Quality of samples:not specified / average specimens
Rarity at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
References
References:Harold Moritz collection
Associated Minerals Based on Photo Data:
Beryl2 photos of Manganese Dendrites associated with Beryl at this locality.
Data
Mineral Data:Click here to view Manganese Dendrites data
Locality Data:Click here to view Case Quarries, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Manganese Dendrites
3.8km (2.4 miles) A Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
12.6km (7.8 miles) B 2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford Co., Connecticut, USA
14.2km (8.8 miles) C Newington, Hartford Co., Connecticut, USA
20.0km (12.4 miles) D Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex Co., Connecticut, USA
33.9km (21.1 miles) E Huckleberry Hill, Avon, Hartford Co., Connecticut, USA
37.2km (23.1 miles) F Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut, USA
74.0km (46.0 miles) G Loudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire Co., Massachusetts, USA
81.9km (50.9 miles) H Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA
92.1km (57.3 miles) I Leverett, Franklin Co., Massachusetts, USA
98.9km (61.4 miles) J Conklin Quarry, Lime Rock, Lincoln, Providence Co., Rhode Island, USA
106.0km (65.9 miles) K Dalton, Berkshire Co., Massachusetts, USA
126.7km (78.7 miles) L Route 13 area, Lunenburg, Worcester Co., Massachusetts, USA
129.8km (80.6 miles) M Wayland, Middlesex Co., Massachusetts, USA
154.8km (96.2 miles) N Milford, Hillsborough Co., New Hampshire, USA
167.1km (103.8 miles) O Joppa Hill, Amherst, Hillsborough Co., New Hampshire, USA
191.1km (118.7 miles) P Newbury, Essex Co., Massachusetts, USA
Mineral and/or Locality  
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