Stellated Sulphate of Barytes
- Div. 2. Imitative.
- White semi-pellucid Spar. Woodward, 88. spec. a. 16.
- Starred waxen-vein. Grew’s Musæum, p. 312.
- Lepastrum. Hill. p. 146. tab. 2. spec. 1. 2.
This Lepastri vary in general form, but not much in their crystallization; that is to say, they vary in the height, largeness, and spreading of the group. Thus there are four the most general appearances of these aggregated stellæ, which are perhaps sufficiently described by the figures. It may however be observed, that the ends of the crystals generally incline downwards; indeed they are rarely otherwise*.
The piece of Septarium is covered with two coats in this specimen, as well as the last, but is of the more usual colour. The coat on the left hand side appears to be just forming.
- * We shall explain the crystallization with some larger varieties of Sulphate of Barytes shortly.