Chap. 11. ] list of manganese minerals. 33 
Table 2 — concld. 
List of known manganese minerals with their chief properties. 
Name. 
Formula. 
Crystalline 
system. 
Specific 
gravity. 
Hardness. 
Sulphates — 
Szmikite 
IVInSOi f II2O 
Amorphous 
3-15 
1-5 
Ilesite . 
(Mn,Zn,Fe)S04 + 4 H2.O . 
V? . 
"* 
Luckite 
(Fe,Mn)S04 ^ 7H2O. 
V. . 
Mallardite 
MnS04 + 7H2O 
V. . 
■ A t nil n 1 ^" o 
x\ nj (Jlilll LL • 
V. 
1* 78 
1" 5 
Bushmanite . 
(Mn,Mg)Al2(S04)4 + 24H2O. 
V? . 
Dietrichite 
(Zn,Fe.Mn)Al2(S04)4 
+ 24H2O. 
V? . 
2 
Tungstaies — 
Wolframite 
(Fc,Mn)W04 . 
V. . 
7- 2-7- 5 
5-5" 5 
Hiibnerite 
MnW04 
V. . 
7-2-7-5 
5-5-5 
In addition to the minerals mentioned in the foregoing list there are 
many others that contain manganese in quantities too small to pro- 
duce any essential change in the characters of the mineral. There 
are also many minerals containing a considerable proportion of man- 
ganese, but which have not been sufficiently investigated for their proper 
position in the above classification to be ascertainable. Of these the 
following Swedish arsenates and antimonates of manganese, often con- 
taining other bases such as iron, may be mentioned : — basiliite, 
chlorarsenian, chondrostibian, elfstorpite, lamprostibian. magnetostibian , 
melanostibian, retzian, rhodarsenian, sjogrufvite, 
I D 
