oy Se fet OPS ONL ee Sart eee eee See le 
ie a PN See ae oe 
es 
Seventh Supplement to Dana’s Mineralogy. 139 
afforded 0°10 tiene ped and 1:20 magnesia, with #e 69°88, Fe 27-88==99°06. See 
further under ilmenite and hematite. 
Meturre (475, ve —A new locality has been found in Russia, in the district of 
Nertschinsk, at the mine of Dmitrirwsk, in bituminous coal. 
Microctine [242, be —Breithaupt has described (Berg. u. Hiitt. oe xvii, 324) 
a twin consisting “li albite and microcline, in which the two have the ical axis 
rallel and the faces of perfect cleav ( recisely coincident, holies an 
identity in the initiating of the planes. Breithaupt cites an analysis P 
i, 467, by ajeff, agreeing with microcline in the co ition, affording, viz., 
Si 6720, &1 20:03, Fe 0-18, K 8-85, Ga 0-21, Mg 0°31, Na 5°06, the formula of 
which may be written _ Si+ AiSi*] + (NaSi+AlSie]. 
Motyspenrre [66, I ee ae ee ~ 1 aise: of molybdenite 
are published by A. Knop, in Jahrb. Min., 
Narrotrre [327, VI].—R. Blum has a paper on the pseudomorphs of ‘atte lite 
after oligoclase and nepheline, from the zircon-syenite of Norway, in Aktien ev, 133, 
showing that the na ng is not an original mineral of the rock, as Scl er argued, 
but a result of altera 
Neoroxtre [169].—This mineral, according to A. E, Nordenskidld (Beskrif. Fin. 
Min. ay Min., 1858, i: and Kopp’s Jahresb. for 1857), ee rae MgSi+ 
4(Fe, Mn)§ i+-8H. It is amorphous. G.=27—2'8. H= Color black 
to brownish- black. Streak brown. aes or feeble alate B.B. yields 
water, but is infusible. From Gaosbéle in Finland. 
NIC RES.—C Be Seta ad — described (J. f. pr. Chem., Ixxv, 2) two 
_ ew arsenates of nickel, differing from the common signe in con 
and also pure oxyd of ni They o occur at righ a ae 
(1.) Crystalline, sometimes amorphous. Dar H=t. G.=4'838. 
No fumes on heating in a glass tube. B.B. on charcoal, 
g 1, arsenical fumes. 
pa: ) gr ee ea Su ulphur-yellow, H=4. G.=4'982. a With heat like the pre- 
ceding. gz. nm: 
i Cu no 
(1) 8657 O14 6207" O54 034 094 tr. = 99-90 
(2) 5053 tr, 4824 O81 057 062 —=10017 
Formula of (1.) Ni'As=arsenic acid 38°01, oxyd of nickel 61°99. 
Formula of (2.) NieA i¢ acid 50°54, oxyd of nickel 4946. 
(3.) The oxyd of nickel occurs in regular octahedral crystals with faces of the 
thombohedron, one-half a line e long. Color dull est green. H. Sea 6= 
6°398, Composition, pure protoxyd of nickel. e crystals are not perceptibly 
attacked by acids or by fusion with alkalin prs Were 
Nioxet-Gyusrrz [286].—Reported by W. J. Taylor (Proc. Ac. N. Sci. Philad., 
Aug. 1858) from Webster, Jackson Co., N.C., where it occurs as an amorphous reni- 
station in — e along. with chromic iron. Color apple-green to a 
He 
bideg t has ‘pitted nder the name of Rattisite et igs u. H Zeit, xvii, 1) an 
impure hydrous rs of Sagas _ age in Voi It occurs in 
a and inerusta nearly a. aatien 
apple-green pron Title Todi ” eanaboees o subtranslucent, ‘opaque 
when earthy H.=2--2°5; G.=2'358—2°370. As silelfala by C. Winkler is given 
Si Al ¥ Ni Co Ca H 6 4s 
Pa 468 081 s587 067 040 1117 270 080 
is stated to be he numbers as they stand add up only 96°25 
Hnirng Pad The ¥ Potted Fidget yee sum of the silica, oxyd of nickel and 
Water is 91-42 (it is as printed 463 las oT). and thence deduces the formula 
SNiSi+4H—=Silica 48:31, Ni 3915, H 12°64. It hence appears that there is a ty- 
