436 TABLE III. FOR DETERMINATION OF MINERALS. 



Tin ore, 

 Zircon, 



Uranite, 



Apophyllite, 



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. 



t Fusible. 



228 2-0—2-5 3-0—3-6 Basal, perf !! 

 165 4-5—5-0 2-2—2-4 Basal, perf! 

 180 5-0—6-0 2-5—2-8 Lat. distinct. 

 184 6-0—6-5 3-3—3-5 Lat. indistinct ! 

 210 " 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. 



m. CRYSTALS TRIMETRIC. 

 1. Luster unmetallic. 



* Infusible. 



143 1-0—1-5 2-7—2-9 Basal, fbl !! 



118 3-5—4-0 2-9—3-0 Lat. imp. 



270 4-0— 4-5 5-4— 5-6 Basal, fol !! 



156 6-5 — 7-0 3-3—3-5 Lat. imp. 



174 7-0—7-5 3-6—3-8 Indistinct. 



174 7-5 3-1—3-4 Indistinct. 



194 8-0 3-4—3-6 Basal, perfect! 



199 8-5 3-5—3-8 Imperfect. 



t Fusible : gelatinize in acids . 



167 3-5 2-3—2-4 One perfect 



167 4-5 2-2—2-4 Two rect. perf 



168 4-0 — 4-5 2-0 — 2-2 Imperfect. 

 272 4-5—5-0 3-3—3-5 Lat. perfect. 



166 45—5-5 2-1—2-3 Lat. perf. 



167 5-0—5-5 2-2—2-3 Imperfect. 



Talc, 



Aragonite, 



Red Zinc ore, 



Chrysolite, 



Staurotide, 



Andalusite, 



Topaz, 



Chrysoberyl, 



Mesole, 



Thomsonite, 



Phillipsite, 



Calamine, 



Nat.rolite, 



Scolecite, 



I Fusible : not gelatizing ; giving no odorous or colored fumes before tba 

 blowpipe. 



rale, (some var.,) 143 1-0—1-5 2-7—2-9 Foliated!! 



Niter, 101 2*0 1-9—2-0 Imperfect. 



Epsom salt, 124 2-0—2-5 1-7—1-8 One perfect. 



Cryolite, 132 " 2-9—3-0 Oneprf;two 



