[north 
68 NATURAL HISTORY. (Minerals.) 
ferred the dioptase or copper-emerald, a scarce mineral from the Kirguise 
country in Siberia.— -Silicate of bismuth, also called bismuth-blende, 
a mineral found in the form of hair-brown globules, from Schneeberg, 
Saxony. Silicate ofzirconia, to which belong Werner’s common zircon 
and some hvacinths of jewellers, from Ceylon, Auvergne, Chili, the 
Lake Ilmen in Siberia ; also the variety called zircomte from Friedricks- 
varn in Norway, and the ostranite from the same locality the blue ; 
zircon from Vesuvius.— To these is added the thorite of Berzelius, 
from Brevig in Norway, a new mineral in which the metal thorium 
was first discovered .—Silicate of alumina : of these we have the 
andalusite, the kyanite or disthene, and the related mineral substances 
called sillimanite, worthite , bucholzite, and fibrolite (one of the con- 
comitant substances of the corundum of the Carnatic) ; the allopham, 
the halloysite, lenzinite, scarbroite , bole , and some minerals of similar 
aspect are also referable to the silicates of alumina; and among these 
may be particularized the cailinite or Indian pipe-stone from the quarry 
of Coteau des Prairies, brought from thence by Mr. Cathn, the first 
white man allowed by the Indians to visit it, and after whom the sub- 
stance was named by Dr. Jackson —agalmatolite (Werner’s bildstein, 
Haiiy’s talc glaphique) employed by the Chinese for carving images, 
The Silicates with several bases are under arrangement in a series of 
Cases, nearly in the following order: , 
Cases 27 to 29 contain zeolitic substances : apophylhte, or lchthy- 
ophthalmite, in fine crystals, from Hesioe in Faroe ; with stilbite ; 
with tessellite of Brewster ; with poonalite of Brooke, &c. ; a variety oi 
apophyllite, called albine by some mineralogists ; — chabasite or chabasie, 
in groups of primitive rhomboidal and modified crystals ; — the variety 
called haidenite from Baltimore ;—mesotype from Auvergne, * aroe, 
&c. , to which are also referred the natrolite of Klaproth, the needle- 
stone of Werner, the scolicite , the mesolite, krokalite, &c. ;-anal- 
cime, among the crystallized varieties of which are remarkably large 
specimens of the trapezoidal and other modifications from Fassa 
in Tvrol -stilbite and heulandite, or foliated zeolite in splendid speci- 
mens from Iceland, Faroe, and Scotland -,-brewsterite ;—laumontite or 
lomonite, also called efflorescent zeolite, because most of its varieties are 
subject to decomposition by exposure to the air;— a suite of speci- 
mens of comptonite from Vesuvius, lining the cavities of a pyroxemc 
lava, &c., accompanied by gismondine and other crystallized substances; 
together with thomsonite, which is supposed to be only a \ ariety 
of< comptonite ; — gmelinite or hydrolite ; — levine, and some other scarce 
zeolitic substances. .. ,, 
Case 29. To the same family of minerals belongs the prelimte, the 
grass-green variety of which, discovered in South Africa by the Abbe 
Rochon, has been mistaken for chrysolite, chrysoprase, and even emerald , 
—to this also belongs the koupholite of Vauquelin. The substance known 
by the name of Chinese jade or you-stone , (kyonk tshein of the Bur- 
mese,) is likewise placed with prehnite, to which it has been referred by 
Count Bournon; but no chemcal analysis has as yet been given of it: 
(amono* the vessels wrought out of it in this Case is a cup, the 
gift of* the king of Ava to Lieut.-Col. Burney when British Resi- 
dent at that court, and by him presented to the British Museum. ) 
