| Locality type: | Quarry |
| Classification |
|---|
|
| Species: | Tantalite-(Mn) |
| Formula: | Mn2+Ta2O6 |
| Comments: | occurs as small browish-red to reddish-orange, and orange-brown, highly modified, flattened, and distorted crystals to about two inches in length. They are often partially or completely embedded in spodumene cleavelandite, lepidolite, or quartz. A characteristic occurrence is as small crystals grown upon or near to the outer surfaces of spodumene crystals, or partially enclosed within them but projecting above the edges of the spodumene crystals. The flattened tantalite crystals look very much like flattened crystals of zircon but an x-ray powder photograph revealed that they are tantalite. |
| Habit: | subhedral; highly modified, flattened, and distorted |
| Colour: | red-brown, reddish orange |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Rare |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
|---|
|
| Mineral Data: | Click here to view Tantalite-(Mn) data |
| Locality Data: | Click here to view Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (2 photos) |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 623271 |
| Long-form Identifier: | 1:3:623271:9 |
| GUID (UUID V4): | 76dc4afa-24a7-4d65-a383-4cfd062a9c36 |
| Nearest other occurrences of Tantalite-(Mn) |
|---|
|
|
| 3.0km (1.8 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 12.9km (8.0 miles) | ⓘAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 19.8km (12.3 miles) | ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 80.4km (50.0 miles) | ⓘFillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
| References |
|---|
|
|
Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA