T*BLR III. FOR DETERMINATION OF MINERALS. 



43ft 



t Fusible. 





Hardness. Sp. gr. Cleavage.. 



Alum, 



127 1-5—2-0 1-7—1-8 Oct. 



Common salt, 



104 2-0 2-2—2-3 Cubic. 



Red copper ore, 



296 3-5—4-0 5-8—6-1 Oct. imperf. 



Fluor spar, 



121 4-0 3-0— -3-3 Oct. perf. 



Pyrochlore, 



208 5-0—5-5 3-8—4-5 None. 



Analcime, 



168 " 2-0—2-3 Imperfect. 



Lapis Lazuli, 



196 5-5—6-0 2-5—2-9 Dodec. imperf. 



Sodalite, 



197 5-5—6-0 2-2—2-4 Dodec. imp. 



Garnet, 



184 6-5—7-5 3-5—4-3 Dod. oft. distinct 



Boracite, 



126 7-0 2-9—3-0 Oct. indistinct. 





2. — Luster metallic. 



* No fames before the blowpipe on charcoal. 



Native copper, 



290 2-5-3-0 8-4— 8-8 None. 



Native silver, 



323 " 10-3—10-5 None. 



Native gold, 



312 " 12-0—20-0 None. 



Blende, 



269 3-5—4-0 4-0— 4-2 Dodec. peif ! 



Native platinum, 



308 4-0—4-5 16-0—19-0 Cubic, indisU 



Native iron, 



230 4-5 5-1— 5-2 Oct. perfect. 



Chromic iron, 



241 5-0—5-5 4-3— 4*5 Oct. imp. 



Franklinite, 



240 5-5—6-5 4-8— 5-1 Oct. imp. 



Magnetite, 



235 " 5-0— 5-1 Oct. imp. 



t Fumes before the blowpipe on charcoal. 



Vitreous silver, 



325 2-0—2-5 7-1—7-4 Dodec. imperf. 



Native bismuth, 



220 " 9-7—9-8 Oct. perf! 



Native amalgam, 



287 2-0—3-5 10-5—14 Dodec. imp. 



Erubescite, 



294 2-5—3-0 5-0—5-1 Oct. imp. 



Galena, 



277 " 7-5—7-7 Cubic perf ! 



Gray copper ore, 



295 3-0—4-0 4-7—5-2 Indistinct. 



Nickel glance, 



253 5-0—5-5 6-0—6-2 Cubic perf! 



Cobaltine, 



266 " 6-1—6-3 Cubic perf. 



Smaltine, 



2o6 " 6-3—6-4 Oct. imp. 



White nickel, 



263 5-5 7-1—7-2 



Pyrites, 



231 6-0—6-5 4-8—5-1 Cubic hip. 



Anatase, 



H.— CRYSTALS DIMETRIC. 

 1. Luster unmetallic. 



* Infusible. 



211 5-5—6-0 3-8—3-9 Oct. and basal. 

 35 



