Edenite is a member of the amphibole group with the general chemical composition NaCa2Mg5(Si7Al)O22(OH)2. Edenite is named for the locality of Edenville, Orange County, New York, where it was first described.
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| Known Facts |
| Color Key: |
White to gray, pale to dark green, also brown and pale pinkish-brown |
| Refractive Index: |
1.606 - 1.672 |
| Chemical Composition: |
NaCa2Mg5(Si7Al)O22(OH)2 |
| Hardness: |
5 – 6 |
| Density: |
3.05 - 3.37 |
| Crystal Group: |
Monoclinic |
| Ocurrence: |
Myanmar, from a mining area called Dattaw; Embilipitiya, Sri Lanka. |
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Edenite is a biaxial positive mineral. It forms as fibrous prismatic crystals with good cleavage on the 110 plane.
Fracture is conchoidal and the luster vitreous with a white streak. |
| Illustrations |
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