A SYSTEM Off 
SECT* CXCIIL 
Copper is found in the earthy 
Jf. Native, or in a metallic ftate ^ Virgin or 
tive copper. Cuprum nativum. 
1, Solid, Solidum^ is found in the iron mine 
of Hefslekulla, in the province of Nerike^ 
and at Sunnerlkog, in the province of Smo-> 
land*, alfo in the Ruffian Carelia, and in 
other foreign places. 
2. Friable, in form of finally and fomewhat 
coherent grains. Cuprum nativum particulis 
conglomeratis diftin^is. Precipitated or Zi- 
ment Copper. It is found at Riddarflayttan 
in Weftmanland, at Fahlun in Dalarne,^ 
and in Hungary* 
It has been obferved, that both copper 
and filver glafs ore, being precipitated from 
water, become friable and granulated, but 
that they in time grow folid and ductile : 
whence the difpute about the diftindion 
between native ' and precipitated copper 
may ceafe, the rather as native copper will 
fcarcely be found in other places, and in 
any other kinds of itones^ than through 
which the ;ziment or vitriolic waters have 
circulated ; altho’ the fiffures thro’ which 
it has run may afterwards be filled with a 
ftony fubftance. 
SECT. CXCIVV 
Si In form of a calx, Minera cupri calciformisi 
l . Pure, Minera cupri calciformis pur a. 
a, Loofe or friable, Ochra veneris, 
li Blue, C^eruleum montanumi 
U 
