364 Supplement to Dana’s Mineraloby. 
268. The twins resemble those of sphene, being compounded parallel to the 
plane ii. These results therefore ~ erie pe the announcement by the writer 
that keilhauite and s ted.—1s. D. D.] 
Lanruanite [p. 456].—-J. Lawrence mr Amer. J. Sci, [2], xviii, 878. 
LeucuTenBerGire [p. 294). neon on the eae of leuchtenbergite 
by Kenngott, Min. Not., No. 
Matvocgrts [p. 127].— soe according to Kemngot (Min. Not., No. 11), 1:1 (ba- 
je ka Bal? of 5-94 
nite of unknow anit Melinite is a 0 silicate of alumina, Analysis 
the v. Haase (Jahrb. Geol, Reichs, 18538, 828): 
Si Al (by loss) Fe Ga H 
46°54 26°7 * ioe 92 039 11°36 (of which 1:08 lost at 100° C.) =100 
46°47 11°64 “ 106 “* “ 
Corresponds to 10- a sia 708 peroxyds, and 11-42 water. 
idan’ aren 225].--M. N. de Kokscharoy announces that according to his measure- 
eae of Vesuvius is not hexagonal but trimetric with the habit mono- 
Mote on the mo per mene ee apd A mma Sitzungsber., Wien, xii, 536. 
See further, Biotite, Phlogopite. | 
Muwerene [p. a oe yar of pre occur at the Wheatley Mine, | 
near Phoenixville, Pa. L Smith A Sci.. [2], xix, 127.—Analysis of mimetene ) 
of Caldbeck Fell, Cotabesland by C. Hamels, (Po, xci, 816): | 
Pp be cl | 
‘on 4 b 
18-4 3°34 68°89 a 2-41 = 100 
corres cong to ri Say #)+. Pb aN rs =7218. In muriatic acid eer with i 
diffic i but perfect 
Miser co pe pe (62, Lier —Analysis by Freitag, Rammelsberg’s Handw. 
5th Suppl 55; by Cv hrb. k, k. geol. hoe 9 400; Reg ib, $28. 
See Lieb. u. Kopp Sale gatt ta 779. 
Motyspate or Iron, visdihdcacieidile’ a shied containing mol molybdie acid and 
sesquioxyd of iron, in Heard Co,, G Georgia, which is probabl a molybdate of iron, is 
announced by Mr. W. J. Taylor, It is in te! geil sin tufts, , formed of deli- 
ox 
described by D. D. Owen. 
Motrspentre [p. 66]—Molybdenite occurs in Canada in a vein of quartz inter- 
secting white erystalline I limestones north of Balsam Lake, on a small island in Big 
Mud Turtle ef It is associated with greenish scapolite, ‘green ee ee 
and iron pyrites (Logan’s Rep. Geol. Oneada,” 1852-3, 1 oe 
Mosanprire [p. armel penx states in a recent communication to the 
that he has fine specimens osandrite in prisms, having the sepect of epidote, thus - 
ing the ldaeeatian « abe p. 343 of Min. 
Nirre or Nrrrare or Porasa [p. 433].—Nitre, according + o Frankenheim is di 
m like carbonate of lime, one form (the common a prismatic like ara- 
onite, the other rhombohedral like calcite. Both a oi crs ae between the tem 
ures —10° ©, and 300° C. ae grin atic (a) is normal be 
he rpeeabahegenl, (8). 4 
He 
Be 
858 
Ei 
= = 
ae 
iit 
ae | 
& 3 
oo 
5 
a 
t< 
B 
mi 
a 
BB 
SeEtel 
e 
Le 
Es 
a 
z 
he sag 
Tie ara and retaking again its form as the temperatnre diminishes—Pogg. An. 
pa Ip. § 239].—Analysis of from Zrnin near 
mui, where it oeeurs in granule, ty ene Jebel, ie Reichs 1863, ane ‘ 
a: —_ 2316 Oa 300 K017 Naoie depen 
