Sulphuret of Zinc, Blend
- Class 3. Metals.
- Order 1. Homogeneous.
- Gen. Zinc.
- Spec. Oxygenized.
- Spec. Char. Zinc in combination with sulphur.
- Zinc mineralized by sulphur with iron. Kirw. v. 1. 237.
- Blende, Emmerl. v. 2. 443. Syst. Min. Jameson, v. 1. 16.
- Zinc sulphuré. Haüy, v. 4. 167.
Is the same substance as the last. The crystallization is a very curious one. The edges being truncated adding 6 faces, which , with the truncations and the solid angles spoken of in the last, make it 14. The latter faces may be triangular, like the three bottom ones, or hexangular like that at top.
These are on a gangue of somewhat dirty green chlorite and quartz, with pyrites.
The nature of the accumulation will be seen when we take occasion to figure the primitive form.
The well known semimetal zinc, often used as a principal agent in galvanism, for making of brass, &c. is extracted from this ore.