432 TABLE II. FOR DETERMINATION OP MINERALS 





Sp. gr. 





Sp. gr 



Opal, 



u 



Topaz, 



3-4—3-6 



Quartz, 



2-6—2-8 



Diamond, 



3-4—3-7 



Alum-stone, 



u 



Kyanite, 



3 5—3-7 



Talc, 



2-7—2-9 



Staurotide, 



3.5—3-8 



Pyrophyllite, 



u 



Chrysoberyl, 



3-5—3-8 



Mica, 



2-8—3-0 



Anatase, 



3-8—3-9 



Turquois, 



u 



Sapphire, 



3.9—4-2 



Nephrite, 



2-9—3-1 



Blende, 



4-0—4-1 



Andalusite, 



2-9—3-2 



Spinel, 



3-5—4-6 



Emerald nickel, 



3-05 



Zircon, 



4.4—4.8 



Clintonite, 



3-0—3-1 



Monazite, 



4-8—51 



Sillimanite, 



3-0—3-4 



Piumbo-resinite, 



6-3—6-4 



Bucholzite, 



3-2—3-6 



Tin ore, 



6-5—7-1 



Chrysolite, 



3-3—3-6 







t Fusible with more or less difficulty. 





Chabazite, 



2-0—2-2 



Prehnite, 



2-8—3-0 



Stilbite, 



2-1—2-2 



Boracite, 



2-9—3-0 



Heulandite, 



2-2 



Chrysolite, 



t< 



Gypsum, 



2-2—2-4 



Euclase, 



*2-9— 3-1 



Apophyllite, 



2-3— 2-4 



Hornblende, 



2-9— 3-4 



Fel'dspar, 



2-3—2-6 



Lazulite, 



3-0—3-1 



Serpentine, 



2-4—2-6 



Tourmaline, 



tt 



Obsidian, 



2-2-2-8 



Spodumene, 



3-1—3-2 



Harmotome, 



2-3—2-5 



Chondrodite, 



u 



Petalite, 



2-4—2-5 



Axinite, 



3-2—3-3 



Schiller spar, 



2-5—2-7 



Pyroxene, 



3-1—3-5 



Lapis Lazuli, 



2-5—2-9 



Sphene, 



3-2— 3*5 



Albite, 



2-6—2*7 



Epidote, 



u 



Labradorite, 



2-6—2-8 



Idocrase, 



3-3-3-4 



Scapolite, 



M 



Manganese spar, 



3-4—3-7 



Iolite, 



U 



Garnet, 



3.5—43 



Beryl, 



a 



Celestine, 



3-8—4-0 



Chlorite, 



2-6—2-9 



Pyrochlore, 



3-8—4-3 



Chlorophyllite, 



2-7—2-8 



Heavy spar, 



4-3-4-8 



Talc, 



2-7—2-9 



Monazite, 



4-8—5-1 



Mica, 



2-8—3-0 



Tungstate of lime, 



6-0—6-1 



Anhydrite, m 



K 



Anglesite, 



6-2—6-3 



b. Colored or odorous fumes before the blowpipe. 



Scorodite, 



31—3-3 



1 Horn silver, 



5.5—5.6 



Blende, 



4-0—41 



i Bismuth blende, 



5-9—61 



Calamine, 



4-2—4*5 



J Mimetene, 



6-4—6-5 



