a ee 
ae 5 
k 
-6 Carl Habel, Berlin, 1886 
E sak) eh ys E 
h 378 General Notes. = [April, 
Guejarite, hitherto known only from Spain, is mentioned by F. 
Sandberger! as occurring at Machacamara, in Bolivia, in radial 
aggregates in white quartz, associated with barite. — G. F. 
Kunz announces in a paper in the American Journal of Sciencé 
that the meteorite described by him at the last meeting of 
the American Association as the Charleston, W. Va., meteor- 
s creek, Wayne county, . Va, and not, 
as before. stated, at Charleston. It is described as a me- 
teoric iron, made up of crystalline blocks of plessite and kama- 
cite, and belongs to the “grobe Lamellen” of Brezina. An 
analysis yielded: Fe = 91.56, P = 0.13, Ni and Co (by differ- 
ence) = 8.31.— i 
near Marburg, and those of the Erzgebirge have been pretty 
thoroughly investigated by Stadtlander, of Liineberg, and 
Schalch,! of Leipzig. The former thinks that the optical anom- 
alies of analcite must be the result of secondary conditions which 
acted after the crystal had been formed.’ He finds also twins O 
atrolite in which the twinning axis is normal to oP and the 
composition face is the base———TIn a little book entitled Die 
Chemische Natur der Mineralien Rammelsberg attempts a sys- 
tematic arrangement of all the minerals, the analyses of which 
show them to have a constant composition. 
suspension and a little barium chloride in solution. On evapora 
tion, little rhombic tables of barium antimony tartrate are found 
around the edges of the drop. A closer examination of these 
shows them to possess a monoclinic symmetry, with the forms 
oP, P and % Poo best developed. A practical use of these 
methods is made in an examination of the composition of rittin- 
_ gerite and pyrostilpnite. The latter is found to be Ag; Sb Ss, the 
es : 
Ag; As S, or Ag; As (S. Se) 
_ 1 Neues Jahrb. fiir Min., etc., 1886, 1, p- 89. 
2 February, 1886, p. 145. 
3 Neues Jahrb. fiir Min., etc., 1885, 11, p. 97- 
* Ib., Beil., Bd. iy, p. 178, 
5 Cf. AMERICAN NATURALIST, 1885. March, p. 296; September, p. 886. 
1 1886, I, p. 49. 
