ALKALI NO-EARTHY MINERALS. 145 CHABASIE.* Schabasit, \V. Chabasie, H. Ithombohedral Kouphone Spar, M. Combination of silica, alumina, lime, and water, with a little soda and potash. Gustafsberg. Faroe. Kilmalcolm Silica 50-65 48-30 50-14 Alumina 17-90 19-28 17-48 Lime 9-73 8-70 8-47 Potash and soda 1-70 2-50 2-58 Water 19-50 Berzel. 20-00 Arfwed. 20-83 Connell. Sp. Gr. 2-0—2-1. H. = 4-0—4-5. This mineral is found crystallized in the form of an obtuse rhomboid of 94° 46' and 85° IP by measurements on the planes of cleavage with the reflective goniometer; it yields to cleavage parallel to the planes of the rhomboid, occasionally with bril liant surfaces. Colour white or greyish, sometimes pale-red superficially ; transparent or translucent; scarcely hard enough to scratch glass. Alone it melts easily before the blowpipe into a spongy-like white enamel. Is not acted upon by acids. Primary. I> on P' 94° 46' P or P' on P" 85 14 P on g / , P" on g, or P' on g"... 120 5 P on i or i ) P' on V or V > 175 30 P" on i" or i" ) i on i, i' on i', or I" on i" 173 32 ;on m 143 59 H. Chabasie is met with in the fissures or cavities of some basaltic rocks, or within geodes of (juartz or agate which are disseminated in those rocks. It is thus found in large and very beautiful crys tals in the amygdaloids of Faroe, Iceland, and Greenland, often associated with stilbite and green earth. Splendid specimens occur in a kind of greenstone rock (the grauslein of Werner) • From the Greek, signifying a particular species of stone.