805 Native Copper. —Triphane.—Magnesia,—Amianthus. 
Hungary: it was considered as an ore of cobalt, but was found to 
be composed of sulphur, arsenic, iron, nickel, and 20 per cent. 
of this metal. Its colour is bronze yellow; specific gravity 
11-470; itis malleable, has a hackly fracture ; is as hard as fluor 
spar; is strongly attracted by the magnet ; does not tarnish in 
the common temperature, but does when heated, forming a black 
oxide, It yields colourless solutions, but its oxide hydrated by 
aminonia is deep blue. Neither alkaline arseniates, nor phos- 
phates, nor infusion of galls, prodtice any precipitate in its solu- 
tions. Prussiate of potash gives a pearl-gray precipitate, and a 
plate of zinc a black metallic one from its muriatic solution. 
NATIVE COPPER. 
A remarkable piece of native copper was recently found near 
the town of Wallingford, and twelve miles from Newhaven, United 
States. It was turned up in ploughing. The country is of the 
secondary trap formation, and the rocks at the place where it was 
found are of the old red sandstone of Werner,which here occupies 
the plains and runs under the trap. The piece weighs almost 
six pounds ; it is beautiful virgin copper with rudiments of large 
octohedral erystals of native copper upon its surface, which is 
more or Jess incrusted with green carbonate of copper and ruby 
oxide very much resembling that of Cornwall; the ruby oxide is 
particularly remarkable in the cavities of the piece. Another 
piece of nearly ninety pounds weight was found in the same neigh- 
bourhood several years ago.—See Bruce’s Mineralogical Journal, 
vol. i. p. 149.—Szlliman’s Journal, No, I. 
TRIPHANE. 
Triphane has been recently found by Dr. MacCulloch in the 
granite of Glen Elg. 
This mineral has also been observed in Ireland, but not as yet 
in any other part of the British dominions with which we are a¢- 
quainted. —_ 
PURE NATIVE CARBONATE OF MAGNESIA. 
This substance has been lately discovered by Mr. James Pierce, 
on the Western or New-Jersey bank of the Hudson, at Hoboken, 
opposite the city of New-York, in horizontal veins of nearly twa 
inches in breadth, and of unknown depth, in precipices of ser- 
pentine.—Silliman’s American Journal, No.1. 
AMIANTHUS. 
Mr. Pierce, the gentleman who discovered the carbonate of 
magnesia mentioned in the preceding article, has found straw 
and’ rose- coloured’ amianthus of a very fine quality in Staten 
Island. it is not found in veins, but attached to rocks; breaks 
up 
