i ^6 A SYSTEM OF 
a. Of a metallic changeable coloun 
1. Solid, and with line fcales. 
2. In form of balls. The Kugel-eriz^ 
or ball ore. 
It is found at Schemnitz,^ and con- 
tains alfo gold. Its yield of filver is 
twenty-four ounces per cent, and 
thirty per cent, of zink. 
Black mock lead, or blende, found in 
Saxony. This is alfo found, 
1. Solid, and with fine fcales ^ 
2. And in form of balls. 
SECT. CLXXVL 
S. With fulphurated lead, Potter’s ore, 
lena^ Bleyglanz. See SecB:. clxxxviii. 
9. With fulphurated lead and antimony,' 
called Striperz. See Se6t. cxc. 
10. With, fulphurated iron, ArgenUm ferro 
fulphiirato miner alifatiim, Silberhaltiger kies^ 
Marcafite holding filver. 
At Kongfberg in Norway, it is faid, a 
liver-coloured marcafite is often found, 
particularly at the mine called Fraulein 
Chrifliana, &c. This marc-afite contains 
of filver from three to three ounces and an 
half per cent. 
SECT. CLXXVIL 
it. With the acid of common fait, Argentum 
acido falls folutum miner alif at urn. 'Miner a 
argenti cornea, Hcrnertz^ or horn filver ore. 
* This is the fcarcefl filver ore •, it is of 
a white or pearl colour, changeable or 
varying on the furface, fenihtranfparent. 
