1893,] Mineralogy and Petrography. 277 
Tremolite” pseudomorphs after sahlite from the limestone of Canaan, 
‘ Ct., have the composition : 
SiO, AlO, FeO, FeO CaO MgO K,O NaO 
60.98 “10 12 “19 14649362 18 21 
The controversy over the nature of Melanophlogite is not yet ended. 
Bombicci” has recently defended himself against the attack of Friedel, 
and in his defense he accuses his opponent with misquoting him. 
New Minerals.—Ganophyllite, from Harstige, near Pajsberg, 
Sweden, is a manganese zeolite™ that is associated with barite, lead, 
and rhodonite. It occurs in large brown monoclinic, prismatic crys- 
tals, in which æ P is combined with the base and theclinodome. a: b 
: è = .413 : 1 : 1.831. / = 86°39’. On cleavage plates parallel to oP 
a percussion figure may be produced, one of whose rays is parallel to a 
- and the other two inclined at 60° to this. Plane of optical axes is 
perpendicular to 0 Pæ , with c the first bisectrix.. 2E (air) = 41°53’ 
for sodium light, and 2V = 23°52’. The pleochroism.is strong ¢ = A 
= yellow-brown; a = B and 6 = C = colorless. The density is 
2.84 and hardness = 4. A mean of two analyses gave Hamberg a 
result that may be represented by 8Si0,'Al,0, 7MnO + 6H,O/ 
SiO, AlO, FeO, MnO CaO uso PbO?) K,O NaO H,O Total 
39.67 7.95  .90 35.15 111 2 20. 270 218 919 = 99.85 
Pyrophanite, described by the same author as occurring in the same 
mine, is a manganese titanium compound isomorphous with ilmenite. 
_ An analysis gave: 
SiO, TiO, MnO Fe,O, Sb,O, Total 
1.58 50.49 46.92 1.16 .48= 100.63 
It is found as brilliant, deep red, transparent tables, associated with 
ganophyllite. a:e¢— 1: 1.369. The double refraction is strong, and 
the indices of refraction for sodium light are w = 2.481, € = 2.21. 
Density is 4.537. 
Synthesis of the Members of the Sodalite Group.—The 
minerals of the sodalite group have been manufactured by Morozie- 
2W.H. Hobbs. Amer. Geol., July, 1892, p. 44. 
Bull. d. 1. Soc. Franç d. Min., xv, p. 144. 
“Ref. Neues. Jahrb. f. Min., etc., 1892, II, p. 234. 
