SALTS. 71. Al-mnen, 
221 
In a flatc of fohuion, not emitting vapours wiien fulphuric 
acid is poured on it 
Hkhter chein «»««/. 1788 i.p. 374. 
Found in Hi£.ny parts of S>iberia and halj, 
i^alotri- Drv, fibrous, of a filky luflre, not delicjuefcing in the 
thum, atmofphere, nor emitting vapours when lulphuric 
acid is poured on it. 
Scopoi de Hydrarg. Uriens. 1761. p- 68. 
Capillary Allum. Kir-iuan miner, 2. p. 1 3. 
Hair fait. Sebmeij er. mineral, \. p- 
Found in the quickfilver mines of Idria, the lakes or ■< ufeany, m 
Italy, Sicily. Hungn-y, and the coal-mines_ rear Whitehaven ; 
the cryftals are tender capillary lilvery-white filaments, gene- 
rally parallel and incurved, rarely dilpofed in a lleliate man- 
ner, which frequently adhere together an4 form compaa 
pieces ; thefe, after expofnre to the air, lofe their troiifpi- 
rency and become more or lefs ot a yellowifli or greenifli hue. 
^’tiyraceum. Of a yellow colour in its native toil, foft and fat to the 
touch, hardening in the air and becoming white, of 
a waxy luttre, lamellar. 
Stone butter. Kir-man mineral, z. p- 14 - 
Mountain butter. Schmeiffer mineral, i. p. zjt. 
Found in Siberia and Upper Lu/ace, oor.ing trom the furface of 
aluminous (hill: it is a little femitr-nfparent, (oft and triable, 
but becomes brittle by expofure to the air, and contains de- 
compofed fulphatc ot iron as well as alum. 
krreunj. 
Combined with foft nlutnina, not emitting vapours when 
fulphuric acid is poured on it. 
Alumcn teira mineralis. Wall. flit. z. p. 23. n 3- 
Found in the vicinity of volcanic mouotain.s, ar d in various 
parts of the continent: colour rarely white, biowu or blue, 
when the earth with which it is combined is mi.'ced with 
bitumen, in which cafe it flames in the fire and gives out a 
difagreeable odour like burnt peat: fometimes it fpontane- 
oufly hardens in the atmofphere and exhibits its alum in a 
Uaie of effiorefcence. 
Adhering to the tongue, foiling the fingers, not cmitiing 
vapours when fulplniric acid is poured on it, combined 
with indiiratcfd purer aluinina. 
Alumen marmoris. nut. xii. 3. p. 102. n. 3. 
Alumen lapide calcar. WalL jyst. z. p. 34. n. 4. 
Aluminous ores. Rirvian miner. 2. *. 1 5. 
Roman alum, Thomfon them. z. p. 364, 
Rock alujn. Sekmei/w miner, i. />. 173. 
