MIN-ER ALO GX^ 17 
SECT. X. 
D. lime or calcareous fpars, S^atum caka^^ 
reum, 
1. Of a rhomboidal figure. 
a, Tranfparent or diaphanous. 
1 . Refra6i:ing fpar, Sfatum ijlandkum. 
This reprefents the objedls, feen thro’ ir,^ 
double. It is found at Brattforfs, an iron 
mine in the province of Wermeland, and 
alfo in Switzerland and Iceland 
2. Common fpar, which fliews the objeft 
fingle. 
1. White, or colourlefs. 
2. Yellowifii and phofphorefcent, is 
found atjonufwando in Torneo Lapp- 
mark in the Sv/edifii Lapland. ^ 
Opaque, Spatum romhoidale opacum, 
1 . White, is found in many places, moftly 
in clefts, and among cryftallifation.s. 
2. Black, from Winorn at Kongfberg in 
Norway. 
3. Brownifh yellow, at Salberg. 
2. Foliated or plated fpar, Lamellofum, 
This has no rhomboidal figure, but breaks 
' into thin plates fo placed as to be not unlike 
fiieets of thin paper, laid over each other. 
a. Opaque white, Spatum lamellofum opa-- 
cum^ from Winorn at Kongfberg, and 
Scaragrufvan at Egeren in Norway. 
^ There are vaft quantities of refra^llng fpar (a variety 
©f the lUandlc) found in the leadtainesof Derbyfhire, Wales, 
and many other parts of England. D,C. 
c 
SECT. 
