TOWAKFTE. 183 FIG. 180. FIG. 181. wa ma aa' 9° eo he ze ac do xc no pc re tc me vc lea pa ae dd’ xx' vx ffX 99, tin ce cn pe pp hh' pz zz rr' It’ 18° 26' 45 0 90 0 33 18 44 35 55 55 63 6 90 0 19 13 a 24 34 54 64 70 90 27 15 54 90 21 34 11 22 46 47 59 29 35 70 71 39 78 79 83 55 52 20 26 16 0 27 53 67 0 54 40 64 61 41 41 30 46 40 7 42 6 10 16 27 FIG. 182. FIG. 184. FIG. 183. Combinations. p’p\ cp’p\ p'p% P'f a < tfp'z, cep’p'z, cp'p"zm, mhnrcep'p'zw, cnep'pzaw, cd'xvppp ehz. The faces e are stri- ted parallel to their intersections with c; the faces^ are striated arnllel to their intersections with 2. Twins, l. Twin-face a. . Twin-face p. 3. Twin-face e. Cleavage. 2, perfect, but iterrupted ; c, indistinct. Fracture conchoidal, more or less erfect. Opaque. Lustre metallic. Brass-yellow. Streak Teenish-black. Slightly brittle, ii = 3'6.. .4 p o. g = 4'1.. ,4'3. Before the blowpipe on charcoal melts easily and quietly into brittle, grey, magnetic globule. Colours glass of borax green.