GARNET. 
of the road that leads from Drefden to Prague. “At Mero- 
nitz they are dug up without further preparation ; but at the 
laft-mentioned places a regular fyftem of mining is adopted 
for obtaining them. The firft procefs confifts in removin 
the upper itratu mould; after which a fhaft is one 
through the marle, where the boulders and the contritus of 
r of which, being he forn 
m the bottom o t, and, after having yielded 
their eouients are again filled i with the boulders and 
xubbifh. 
The next procefs is that of dew a the pyrope garnets 
from the hetero eneous matter by w they are enveloped ; 
neh the lighter particles are pou i OF a ae ‘water. 
This procefs is repeated feveral times, till nothing 2 remains at 
the bottom of the veffel but the heavier pieces of rubbifh 
with the os hea them, which latter are S eaetilly 
i out by w 
e garnets are men paffed through veffels pierced with 
holes of various diameter, by which means they are forted 
into fix different fizes: of the largeft aed 32 go to an 
ounce; the next are thofe of about 40, 75, 110, 165, 265, 
ht ; while thofe full 
d 400 to an ounce of Nuremberg wei 
lefs in fize are fold partly to the apothecaries, who ufe th 
for oe their "feales o the ri poffeffors of 
bok of = and boring thefe garnets occupies 
great number of m The latter of thefe o 
Sire in the pillows manner: The garnet is lad 
placed and faftened, after which re diamond, which i 
fitted up like a glazier’s arpa is placed on the top ad 
rapidly a by means of a bow. A workman can bore 
t50 a day. 
The | a r of the pyrope garnets are cut and polifhed, 
which is performed with emeril on a difk cut out of fand 
perfection r 
Suabia, the ee of which has no lefs than twenty-four ¢ 
mills, and 140 mafters occupied in the manufacturing o 
this article of ome erce. 
3 
Rate C at, Fe.—Its cola: is Nae on green and Lowa 
of various eens ; the former occurs a » mo 
tain, piftachio, and grafs green, and alfo pafles into green- 
ifh-grey 3 whi i 
Sa. ern a “frnall- rained, fometimes 
spacing to > fplintery, and alfo to {mall conchoidal. Frag- 
ments indeterminately angular, not particularly tharp edged. 
hen maflive it often appears to confifl of coarfe or fine- 
pat teas is 
grained era an of various degrees of aca fome~ 
times perfeétly friabl 
t 1s feldom femitranfparent, generally more or lefs 
a rie only at the edges, fometimes completely 
nefs inferior to that of = noble and pyrope- 
acts 3 itis ‘brittle and eafily fr an 
Specific gravity 3.737 green var. "fre nat) 
Wen ner $ 3-7 54 ae om ie Te felitein cee a Schua 
— 
rey. 
aftituent paris. —The green ee from the Ehrenberg 
a part 
at Ilmenau contains, according to 
Wiegleb and Merz, 
46 
Silica 26. 40 
Alumine 22.70 2a 
ime 17-91 8 
Tron 16.25 20 
Lofs 16.68 12 
100 100 
Voigt’s Min. u. Bergm. Abh. vol. i. 
na confiderable deficit in both thefe analyfes is remark« 
a 
The refult of Klaproth’s analyfis of the olive-green 
garnet, from the river Wilui, in Siberia, is 
Silica - m : . 44 
ae - - - - 33-50 
Alum - - = - : 8.50 
Gut of i iro Iz. 
of caigaice (a trace only). 
Lofs 
100 
Klapr. Beitr. vol. iv. 
The pitch garnet of Karften, defcribed by fome mine- 
agg under the name of Sr HiCaer but pales is nothing 
but common ete of a yellowifh-brown colour, generally. 
occurring in eee 7 iné& granular oraee a, canis. according 
o M. Simo 
Silica 
Alumine 15 
ime 29 
Ion 6.5 
ron = 
q 
Mangane 4:75 
Sha of Titane or 5 
Wat 
ois O75 
Bulletin des Sc. Apr. 1808. 
From the Danifh Naturh. Selikap Skrifter, vol. i. n. 2. 
it appears that Prof. Becker found 200 grains of the green 
garnet’ from Norway to confiit of filex 78, iron 643, alu- 
mine i4s lime 42; the lofs wae 13. 
— eb, an accurate chem who examined the green 
common garnet, from the Teele i iran La could not 
difcover a Sar oh e of alumine in that v 
Its principal localities are Say, “(Schoarzeberg, 
Ehrenfrieder{dorf, Berggiefhiibel, Schneeberg, Geier, & 
Silefia; Bohemia (in feveral parts); Hungary (Dogtatska, 
3 
