436 TABLE III. FOR DETERMINATION OP MINERALS. 



Tin ore, 

 Zircon, 



Uranite, 



ApophylKte, 



Scapolite, 



Idocrase, 



Rutile, 



Hardness. Sp. gr. Cleavage 



214 6-0— 7-0 6-5—7-1 Indistinct. 

 200 7-5 4-4—4-8 Imperfect. 



228 

 165 

 180 

 184 

 210 



t Fusible. 



2-0—2-5 

 4-5—5-0 

 5-0—6-0 

 6-0—6-5 



a 



3-0—3-6 Basal, perf !! 

 2-2—2-4 Basal, perf! 

 2-5 — 2-8 Lat. distinct. 

 3-3 — 3-5 Lat. indistinct ! 

 4*1 — 4-3 Lat. imp. 



2. Luster metallic. 



Foliated tellurium, 280 1*0 — 1-5 

 Copper pyrites, 292 3-5—4-0 

 Hausmannite, 261 5-0 — 5-5 

 Braunite, 261 6-0 — 6-5 



7-0—7-2 Foliated ! 

 4-1—4-2 Indistinct. 

 4-7 — 4-8 Basal, distinct 

 4-8—4-9 Oct. distinct. 



HI. CRYSTALS TRIMETRIC. 

 1. Luster unmetallic. 



* Infusible. 



Talc, 143 1-0—1-5 2-7—2-9 Basal, fol!! 



Aragonite, 118 3-5—4-0 2-9—3-0 Lat. imp. 



Red Zinc ore, 270 4-0—4-5 5-4—5-6 Basal, fol !! 



Chrysolite, 156 6-5—7-0 3-3—3-5 Lat. imp. 



Staurotide, .174 7-0—7-5 3-6— 38 Indistinct. 



Andalusite, 174 7-5 3*1 — 3-4 Indistinct. 



Topaz, 194 8-0 3*4—3-6 Basal, perfect! 



Chrysoberyl, 199 8-5 3-5 — 3-8 Imperfect. 



t Fusible : gelatinize in acids . 



Mesole, 167 35 2*3—2-4 One perfect. 



Thomsonite, 167 4-5 2-2—2-4 Two rect. perf 



Phillipsite, 168 4-0—4*5 2*0—2*2 Imperfect. 



Calamine, 272 4*5—5-0 3*3 — 3-5 Lat. perfect. 



Natrolite, 166 45 — 5*5 2-1—2*3 Lat. perf. 



Scoleute, 167 5*0 — 5*5 2*2 — 2*3 Imperfect. 



J Fuaible : not gelatizing ; giving no odorous or colored fumes before 01 

 blowpipe. 



2*7—2-9 Foliated!! 



1-9 — 2-0 Imperfect. 



1-7 — 1-8 One perfect. 



2-9—3-0 Oneprf;two 



Talc, (some var.,) 143 1-0 — 1-5 

 Niter, 10.1 2-0 



Epsom salt, 124 2-0—2-5 



Cryolite, 132 " 



