Dravite-Schorl Series from
Tourmaline occurrence, Bethel, Fairfield County, Connecticut, USA
| Locality type: | Outcrop | |
| Classification | ||
|---|---|---|
| Species: | 'Dravite-Schorl Series' (not an IMA approved species) | |
| Formation: | Primary | |
| Comments: | Short to elongated (along c axis) prisms with simple rhombohedral terminations, commonly doubly. Januzzi: (1994): "I was recently informed (Schooner, private communication) that outstanding tourmaline crystals were collected, at the Bierman Quarry, that were between 4-5 inches long and about 2½ inches in width. These dravites occurred, in an area of tourmaline bearing schist, bordering the pegmatite dike. Fine doubly terminated crystals of tourmaline occur in the mica schist in the immediate area of the pegmatite locality. The crystals show the typical hemihedral form with well developed rhombohedral terminations; more than the usual number of prismatic faces are present so that the characteristic vertical striations often seen on specimens of tourmaline are wanting in the well formed specimens." | |
| Habit: | elongated prismatic with trigonal terminations | |
| Colour: | black to very dark brown | |
| Quality for species: | Good crystals or rich for species - important (!) | |
| Abundance at site: | Common | |
| Confirmation | ||
| Validity: | Believed Valid | |
| Data | ||
| Mineral Data: | Click here to view Dravite-Schorl Series data | |
| Locality Data: | Click here to view Tourmaline occurrence, Bethel, Fairfield County, Connecticut, USA | |
| Photo Gallery | View Gallery (30 photos) | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 1767017 | |
| Long-form Identifier: | 1:3:1767017:1 | |
| GUID (UUID V4): | 0 | |
| References | ||
Tourmaline occurrence, Bethel, Fairfield County, Connecticut, USA