NATURAL HISTORY. 
Purple, red in Geodes at the 
Rose red, Haytor mine. 
Ruby red—Haytor mine; rare—small but 
very beautiful and perfect crystals, lining 
cellular Quartz. 
Trisated— Ditto. 
Yellow—Ditto; some crystals occur of a 
very clear and fine texture. 
Brown—ditto ; of various shades. 
Cairngorm—ditto; fine specimens but rare. 
Pseudo-morphous— ditto ; taking some of the 
forms of Garnet, and of Iron pyrites. 
Hyalite—ditto; rare. 
Spongiform, radiated, lumellated, cellular, and 
stalactitic varieties also eccur at this mine. 
Amethystine. t Fine specimens have occur- 
OPAL. 
Semi—of various colours—yellow, green, blue, 
whitish, striped—of frequent occurrence 
at the Haytor mine, in rounded nodules 
invested by indurated Clay (Lithomarge.) 
We have specimens closely approaching 
the texture of true Opal. 
CHALCEDONY. 
Haytorite, or Pseudo-morphous Crystals—these 
are of various sizes, taking the forms of 
Quartz, Garnet, or Iron pyrites; the 
name is derived from the mine where they 
occur, 
Hydrophanous, 
Stalactitic. 
