64 
earths. TALCOSE. I. l alcuiii. 
ra/iiatumi Silvery, of a greafy luftfe, compofed of flexible ilellatf 
plates. 
Found in the valley of Tremola in ^’viifx.erland, 
/■osmeiicum. Somewhat flexible, diaphanous, iindulately lamelloiis, ftiin- 
ing, breaking into difeoid fragments. 
Mica taJeofa. Syll. nat xii, 3. p. jg. n 7. 
Ta'c. Kirwan l. SchmciJJer I. p. ig.{.. 
Talc. Thnmfin chomilirw 3.^ 54*. 
Found in Napk', Saxony, SiJefui, Tyrol, and Snieden: colout 
pale green, iilvery, greeniflt grey, green, fed, yellow, or 
ycliowifli ; flrongly heated it becomes whiter, ids tranfparent 
and more brittle : contains filica 48. o alumina 37. o oxyde 
of iron 6.0, niagnefia 1.5. lime 1.5. wjter 5. o,. 
Chine=vix . 
brianzoni- Rigid, w illiout tranfpareiicyj leaving a mark, very mi-* 
ntitely lameliotis- 
Semlundurated Steatites. Kit’wan mineral. 1. p. 15I. 
Sp.iniflt chalk. SchmaJ/er mineral, i. p. (94. 
Found in amorphous mafles in France and Spain: colour white 
or giecnifh : abforbs but does not diff.le itfelf in water: 
hardens and whitens in the fire : contains filica 48. 42 m g- 
neiia zo. 84. alumina 14. iron i. air and water 16. Klapr. 
Smebiis. Rigid, without tranfparency, fhining when rubbed, leav- 
ing a white mark, of fliivery fradlure, fubdiaphanouSj 
apyrous. 
Talcum ungue raiile. Sj^. nat. xii. 3. p. 52. n. 4. 
Soap ft- nc. SchmeiJJer mineral. 1. p. 192. 
Steatite v Kirvoan, 1 . p. 15I. Fho/r/on them, 3. p. 590. 
1. More folid and opakc. 
2. M re folid and diaphanous. 
3. Softer and fubdiaphanous. 
4. 'Softer and fubopakc. 
5. With hcxacdro prifnaatic cryftals terminating in a 6-fided py- 
ramid. 
Found in Cornnvall, China, Nornxjay, SnueJen, Saxony^ and Grf- 
many s colour while or grceiiilh white, greiilh-green, yel- 
lowifli, or reddifh, fometimes veined: does not adhere to' the 
tongue: foft and foapy, and ipay be cur into any fhape: It 
melts with borax and foda into a greenilh flag. 
oliaris. Rigid, opakc, Without tranfparency, iindulately lamellous, 
breaking into difeoid fragments. 
Talcum opacum folidum, Sy/i. nat. xu. 3. p. 52. ». 5, 
Pot-ftone. Kirovan, t . « 55 • Scbmeijfer, i . p. 196. 
Pot-llone. Thomf. cbemijh ^ 582. 
Found imbedded in amorphous inaff s in Rujjia, Nor-way, Saxonpt 
and mary parts of Europe: colour pale yellowilh, or greenifli- 
grey, reddifh-grey, or fpeckled with red, and contains many 
