TABLE I. FOR DETERMINATION OF MINERALS. 417 





Hardness. 



Web8terite, 



129. 1-5— 20 



Nemalite, 



125. 2 



Calc spar, 



115. 3;0— 2-0 



Aragonite, 



118. 3-5 



Diallogite, 



261. 3-5 



Magnesite, 



124. 30—40 



Blende, 



269. 3-5—40 



Dolomite, 



118. 3-5—4 



Mesitine spar, 



249. 4-6 



Oligon spar, 



248. 



Yttrocerite, 



206. 4-5—50 



Ren, mas ; G 16 — 1-7 ; dull ; w, op ; adheres to the 



tongue : sul, sol, no effervescence. 

 Silky fib; G 2-3 — 25 ; gyh, bjb-W; fibres separable, 



brittle on exposure. Serpentine. 

 VI ; cleav ! fib, mas ; G 2-3 — 25 ; vit, p'ly, w, gy, 



bnh, l)k ; trp — op. ; sometimes soft and earthy 



Bl, intense light. 

 Ill ; mas, fib ; G 2-8—3 ; vit ; w, gyh, bnh ; tro- 

 op ; effervesce ; Bl. intense light, crumbles. 

 VI ; cleav ; mas ; G 35— 3-6 ; vit, p'ly ; rdh ; trl 



op ; nit, effervesces : Bl, bor, violet glass. 

 VI ; cleav 1 fib, mas ; G 2-9—3 ; vit, silky ; w, ywh, 



bn ; trp, op ; little effervescence. 

 I ; dodec cleav ; mas ; G 4 — 4-1 ; resin-yw, rdh, 



w ; trp, strl ; nit sol, emitting sul. hydrogen : Bl, 



bor infus. 

 VI ; cleav ! mas ; G 2*8 — 2-9 ; vit, p'ly ; w, gy, bn ; 



no effervescence unless heated. 

 VI; cleav! mas; G 3-3—3-65; vit; ywh, bn on 



exposure ; mur slow solution. 

 VI ; cleav ; mas ; G 3-7 — 3-8 ; vit ; bn on exposure : 



Bl, bor amethystine glob. 

 Ill ; cleav ; mas ; violet b, gyh, rdh-bn ; vit, p'ly ; 



strl, op ; hot mur, sol ; Bl. whitens. Prim. 



Witherite, 



109. 



White lead ore, 



281. 



Strontianite, 



Ill 



Pyromorphite, 



283. 



Spathic iron, 



247. 



Wavellite, 



130. 



Cacoxene, 



249. 



Fluor spar, 



121. 



Apatite, 



120. 



t Fusible with more or less difficulty. 



3*0— 3-5 IU; mas, fib; G 4-2—4.4 w, ywh, gyh; trl— op; 

 nit efferv : Bl fus ! op. glob. 



30—3-5 III ; mas ; G 6-1— 65 ; w, gyh, bnh ; ad, res ; trp, 

 trl ; brittle ; mur eff : Bl, fus 1 on char, lead. 



3-5 III; cleav; fib, mas; G 3-6—3-7; res, vit; gnh, 



ywh, gyh ; effervescence : Bl, fus dif ! colors 

 flame reddish. 



35— 4 VI; hexagpms; bot, fib; G 6-5—7-1; bright gn, 

 iw, bn ; res ; strl, strp ; brittle ; hot nit sol : Bl, 

 fus ! With lead ores. 

 3—4-0 VI , cL mas ; G 3-7—3-9 ; ply ; ywh, bnh, gyh ; dark- 

 ens on exposure ; trl, op ; pulverized, some eft' : 

 Bl, fus dif I ; blackens ; iron reaction. 

 Ill ; fib, glob ; G 2-3—2-4 ; p'ly, vit; w, ywh, bnh, 

 gyh ; trl ; hot nit, sol, vapors corrode glass : Bl, 

 fus, intum, colorless glass. 

 " Div, rad, fib, silky^ \ G 3-3 — 3-4 ; y wh-bn, ywh ; bn on 

 exposure : Bl, infus. 



4 I ; cl ! mas ; G 3" 1 .— 32 ; vit ; w, yw, b, violet, gn, r, 



often lively j trp, trl ; sul, affords fumes that cor- 

 rode glass : Bl, fus, decrep ; phosphoresces when 

 heated. 



4-5 -50 VI ; hexag ; mas ; G 3—33 ; vit, res ; gn, bh. w 

 rh, bn ; trp, op ; brittle ; nit sol slowly \n powder, 



