16 



APPENDIX. 



817 A. Trinkerite. 6. Tschermak, J. pr. Chem., II. ii. 258, and Jahrb. G. Eeichs., 

 1870, xx. 279. 



Compact and amorphous. H. =1'5— 2. G. =1-025. Lustre greasy. Color hyacinth-red 



to chestnut-brown. Transparent to translucent. Analysis, 1. Hlasiwetz (L c.) ; 2. Niedz- 

 wiedzki, Jahrb. Min., 1871, 641 : 



C H S O Ash 



1. Carpano 81 "1 11 -2 47 3'0 None=100 



2. Gams 81 "9 10-9 41 31 =99-0 



Fuses at 168 3 — 180°C, at a hig-her temperature gives off choking fumes. Insoluble in 

 water, and only slightly in alcohol and ether. Soluble in hot benzole. 



Occurs in large compact masses in brown coal at Carpano near Albona in Istria ; also found 

 at Gams near Hieflau in Styria. Resembles in composition the tasmanite of Church (p. 746). 



573 B. Trogerite. A. WeisbacJi, Jahrb. Min., 1871, 870. 



Monoclinic, in thin tabular crystals. Cleavage perfect, parallel to the broad tabidar plane. 

 G. =8'3. Lustre on the cleavage-plane pearly. Color lemon-yellow. Composition, H- 5 As 2 

 + 20 II (Winckler). No analysis is given. Occurs with walpurgite and other uranium min- 

 erals at the Weisser Hirsch Mine in Neustadtel near Schneeberg, Saxony- 



Franotpl. E. BoricJey, Jahrb. Min., 1870, 780. 



Orthorhombic, in acicular crystals. Occurring form I, i-i, m-% ; angle of prism I about 

 164° (Zepharovich). Li radiated or stellated groups. Cleavage probably basic. G. =3 '9595. 

 Color lemon-yellow. Streak lighter. The mean of three analyses gave Boricky : 



Si 6 2tlFe Ca P H 



13-78 6675 0*51 5-27 0-45 12-67=99-43 



Giving a composition near that of uranophane (p. 805). It also resembles it in crystalline 

 form, the angle of prism /of uranophane 146 D , giving 162 D for the prism i-2. 



B. B. turns black. Soluble in warm muriatic acid with separation of flocky silica. 

 Found with fluorite, irranite, and quartz at Wolsendorf , Bavaria. 



622 B. Vanadiolite. Hermann, J. pr. Chem., II. i. 445. 



Form not determined. Occurs in small crystals, partly in druses. Color dark-green, 

 almost black, in small fragments dark emerald-green. Streak grayish-green. Lustre vitre- 

 ous, brilliant. G. =396. Analysis gave 



Si 



Si 



Fe 



Ca 



Mg 



V 



1561 



110 



1-40 



34-43 



2-61 



44-85=100.00 



which Hermann considers as representing a compound of three atoms of augite, and one of 

 subvanadate of Me. He gives for this the formula 3R Si+Ca 6 (Y0 4 +2V0 5 ). B. B. fuses 

 to a black slag with cauliflower-like intumescences. With salt of phosphorus gives a dark- 

 green bead, and a silica skeleton. Decomposed on fusion with a mixture of carbonate of 

 soda and nitre. From Sludanka near Lake Baikal associated with lavromte. — A substance 

 containing as this does over 70 per cent, of a vanadate, with the balance a silicate corre- 

 sponding to augite can scarcely be looked upon as a homogeneous simple mineral. It is here 

 classed with the vanadates. 



573 A. Walpurgite. Walpurgin, A. Weisbach, Jahrb. Min., 1871, 870. 



Monoclinic. in thin scaly crystals. G.=5;8. Lustre adamantine to greasy. Color pome- 

 granate and wax-yellow. Composition fi 4 A.S + 5H in which R=£ Bi-h| H (Winckler). No 

 analysis is given. Occurs with trogerite and other uranium ores at the Weisser Hirsch Mine 

 in Neustadtel near Schneeberg, Saxony. 



323 A. Westanite. C. W. Blomstrand, 03f. Ak. Stockh., 1868, p. 197, in J. pr. Ch., 

 cv. 341. 



In radiated crystalline masses, sometimes in prismatic crystals. H.=2"5. Color brick- 

 red. An analysis gave : 



Si 51 P ¥e H 



(42-53) 51-14 115 1"01 417=100-00 



42-91 51^92 1-5S 



