EARTHS. TALCOSE. 5. Hornblenda. 69 



v:treiu. Of a glalTy luftre, fcmitranfparent, harcildi, fomcwhat 

 fibrous. 

 2. In elongated 6-fidcd arlfnis, having the 2 oppofite edges trun- 

 c.-fted. 



GliiiiV A6lino1ite. Kir'vcan tnuieral i. p. 168. 



Vitreous flriatcd fhoil. Sckrt:ei[jer nvr.trat. Lp-loy, 



Malacolitc. Thomlo i''s chcmipry, 3 p 597. 



Jocund on the Ifl.'.nd of Sky mScotJandy near Allemont in Da:t' 

 phignc, and in the ^yrolofe mountuns, in iolid fnafles, and 

 cry Hal zed in 6fidc-d pril:!}s : colour Icek'green with a filvery 

 luftre, or with a ytliovvi{h (lain, or brownilh-rcd : it breaks 

 longitudinally into long fliarp fplintery fragments, difcover- 

 ing its clofcly adheiing quadrangular or hcxangular fibre?; 

 contains filica 72, c. magnefia 12, 7. carbonate of linlc 6,0, 

 alumina 2, o. oxyde of iron 7, 3. Bergman. 



5. HORNBLENDA. Confifting of carbonate of 

 magnefia, an equal portion of oxycle of iron, 

 and a nearly equal quantity of carbonate of lime: 

 foft, opake, generally of a dull colour, leaving a 

 ilreak, lamellou?, breaking into indeteriTiinate 

 fragments: melting in the lire, with ebullition, 

 into a black opake globule. 



vulgaris. With hardly any luftre> of a dull colour when broken 

 in any diretHion, and exhibiting lamellar pieces or 

 rays. 



Talcum Corneus. Syjh z?«/. xii. 3 p. 53. n. 9. 



Hornblende. Kir^' an mineral. \. p.i\%. 



Common Hornblende. Schmei/Jer mineral. 1.^.180. 

 ( Common Hornblende. Thomfon i chemifiry^ 3 p 542. 



Found in S^VL-eden^ Saxovy^ Portugal., Bohsniiay and moli Eu* 

 ropean mr^untains, In foiid mafles, interfpcrfed with other 

 Hone.*; fomotimcs cryi^allized in 6 or S-fidcd prifins : it is 

 always either radiated or foliated, and the cryiiids are tranf- 

 vcrfely ilriated : colour dull green or blackiili : fra-flure 

 ftraight, or curved, or divergingiy ftriate ; contains filica 

 37, alumina 27, iron 25. lime 5. magnefia 3. 1ho?7jfon, 



lahradorka Subopake, with a little luilre, in curved lamellar pieces, 

 which when broken difcovers a coppery-black inter-* 

 nal fur face. 

 Labradore Hornblende. Kh'Txan mineral. i,p.2Zi, 

 Labradore Hornblende. Scbme^^er mineral, i./". 1B2, 



