| Locality type: | Quarry |
| Classification |
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| Species: | Manganese Oxides var: Manganese Dendrites |
| Habit: | dendritic coatings |
| Colour: | black to dark brown |
| Abundance at site: | Common |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Beryl | ⓘ2 photos of Manganese Dendrites associated with Beryl at this locality. |
| Data |
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| Mineral Data: | Click here to view Manganese Dendrites data |
| Locality Data: | Click here to view Case Quarries, Portland, Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 256850 |
| Long-form Identifier: | 1:3:256850:8 |
| GUID (UUID V4): | 95810ef9-900b-4a6d-aae5-07f4586ce0fb |
| Nearest other occurrences of Manganese Dendrites |
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| 3.8km (2.4 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 12.6km (7.8 miles) | ⓘ2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford County, Connecticut, USA |
| 20.0km (12.4 miles) | ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 33.9km (21.1 miles) | ⓘHuckleberry Hill, Avon, Hartford County, Connecticut, USA |
| 37.2km (23.1 miles) | ⓘRoncari Quarry, East Granby, Hartford County, Connecticut, USA |
| 74.0km (46.0 miles) | ⓘLoudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire County, Massachusetts, USA |
| 81.9km (50.9 miles) | ⓘFillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
| 98.9km (61.4 miles) | ⓘConklin Quarry, Lime Rock, Lincoln, Providence County, Rhode Island, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Book (volume) | | Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...campaign would produce results, or, in the worst case, eliminate barren areas from further consideration...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill O. Murphy |
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Case Quarries, Portland, Middlesex County, Connecticut, USA