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British Mineralogy
XLIV
Silex granatus
Garnet
- Class 2. Earths.
- Order 1. Homogeneous.
- Gen. 6. Silex.
- Spec. 13? Garnet.
- Div. 1. Crystallized.
- Var. 1. dodecaëdral, or primitive.
- Gen. Char. Primitive form, the rhomboidal dodecaëdron; scratches quartz.
- Syn.
- Garnet. Kirw. 1. 258.
- Granat. Emmerl. 1. 43, and 3. 246.
- Borax granatus. Linn Syst. ed. 13. v. 4. p. 96.
- Grenat. Haüy, 2. 540.
Shows a variety in lighter granite gangue with the edges more deeply truncated on the 6 opposite edges, see the right hand and middle figure, makin an 18-sided crystal. The left hand figure shows the truncation equally deep of a 36-sided figure. The lower figure forms a prism by 6 sides being elongated. These varieties are more or less distinct in the gangue above.
