ORES OF COPPER. 139° 
Olivenite—Hydrous Copper Arsenate. 
Brienne.  SAT=92° 30’. In prismatie crystals, and 
also fibrous and granular massive. Olive-green, and of 
other greenish shades, to liver and wood-brown. Streak 
olive-green to brown. Substransparent to opaque. Brittle. 
Composition. Cu, O, As,= Arsenic pentoxide 40°66, copper 
oxide 56°15, water 3°19—100. Fuses very easily, coloring. 
the flame bluish green. B.B. fuses with deflagration, giv- 
ing off arsenical fumes, and affords a brittle globule, which 
with soda yields metallic copper. 
Obs. From Cornwall, the ‘Tyrol, Siberia, Chili, and other 
places. | 
Besides the above, there are the following salts of copper : 
Copper Arsenates.—Huchroite has a bright emerald-green color, and 
contains 33 per cent. of arsenic acid, and 48 of oxide of copper ; occurs in 
modified rhombic prisms ; H.=3°75 ; G=3'4; from Libethen, in Hun- 
gary. Clinoclasite (Aphanesite) is of a dark verdigris-green inclining to 
blue, and also dark blue; H. =2'5-8;G.=4:19-4°3. It contains 62°7 per 
-cent. of copper oxide; from Cornwall. Hrinite has an emerald-green 
color, and occursin mammillated coatings ;H.—4°5-5; G.=4°04; con- 
tains 59-4 per cent. of copper oxide ; from Limerick, Ireland. Liroco- 
nite varies from sky-blue to verdigris-green ; occurs in rhombic prisms, 
‘sometimes an inch broad; H.=2-2°5; G.=28-2°98. Chalcophyllit: 
(copper mica) is remarkable for its thin foliated or mica-like structure ; 
- color emerald or grass-green ; H.=2; G.—2°55. Contains 58 per cent- 
of copper oxide; from Cornwall and Hungary. Tyrolite (Copper 
froth) is another arsenate of a pale apple-green and verdigris-green 
color; it has a perfect cleavage ; it contains 439 per cent. of copper 
oxide ; from Hungary, Siberia, the Tyrol, and Derbyshire. Cornvall- 
ate and Chlorotile, are names of other copper arsenates. These dif- 
ferent arsenates of copper give an alliaceous odor when heated on 
charcoal before the blowpipe. 
Copper Phosphates.—Pseudomalachite (Phosphochalcite, Ehtite, Di 
hydrite) occurs in very oblique crystals, or massive and incrusting, and 
has an emerald or blackish-green color; H.=4°5-5 ; G.=4°34 ; contains 
64 to 70 per cent. of copper oxide ; from near Bonn, on the Rhine, and 
also from Hungary. Jibethenite has a dark or olive-green color, and 
occurs in crystals, usually octahedral in aspect, and massive; H. = 
4; G.=3'6-8'8 ; contains 66°5 per cent. of oxide of copper; from 
Hungary and Cornwall. Other copper phosphates are Veszelyite, 
Tagitite, Isoclasite. Torbernite is a copper-and-uranium phosphate. 
These phosphates give no fumes before the blowpipe, and have the 
reaction of phosphoric acid. 
Copper Vanadates.— Volborthite is a copper-and-calcium vanadate 
from the Urals; and Mottrammite and Psittacinite, copper-and-lead 
vanadates, the former from England, and the latter from gold mines 
in Silver Star district, Montana. 
Rivotite. Yellowish-green copper antimonate and carbonate. 
