Eighth Supplement to Dana’s Mineralogy. 375 
eed grade —Rammelsberg (Pogg. Ann., evii, 451) gives this name to 
the octahedral i which occurs ee with he matite, in the fumaroles 
formed at Tciavinis after: the — of I His former analyses showing od 
presence of a considerable amount of m Soa are contained i in Suppl. VIL Tw 
additional analyses of pag wanted out by means of the magnet from the 
finely pulverized mineral gav : 
Mg Cu Insol, 
1, G.=4°568. 82°91 13°60 G99 251 = 10001 
2, G.=4°638. 83:30 15°41 0°59 2:00 == 99°30 
which, oa ‘as age of ae and insoluble pone gives (1.) #e 85:92, 
iy 14-09= d(2.) # 1, Mg 18°77==99 
The Gas Soipace (Suppl. v 1) ‘thus calculated ox: a. mee 86°96, _ 12: ae 
: as a specimen 
Vesuvian hematites. Ra mninalebens considers the composi ition of the crystals as 
Mga Fen in which probably m=3 “and n==4, the regular (monometri¢) form being 
Marcanoprre [p, 223].—An _ analysis of an authentic specimen of margarodite 
- haa original locality at Pfitsch gave Hlasiwetz (Kenngott’s Uebersicht, 1858, 
Bi Al Fe Ca kK Na = ‘Ign. 
45°48 33°80 6°25 0°48 7-31 6°22 0:36 = 99°90 
Kenngott remarks that this s composition may be alae era by the formula RS Si+ 
BS), but adds that this is of little value, as on closer e a. with the magni- 
m 
ently atogee homogen Tt is identical in compotion with Ma called 
Margarodite from St. Ttienne analyzed by Delesse (Min., p. 224)— ay 
Manionire (Elderhorst), see Zine-bloom. 
Mrcasnomrre (Breithaupt), see Embolite. 
Mixosrowrre (Breithaupt), see Embolite. 
Cray [p. 62, 509, I, Il, III, V].—Analyses of mispickel from Sabla in Swe- 
otyka (P ogg. Ann,, cvii, 304): Z 
— 1918 34718 43-26 129 0-14 = 98°60 
$ give the received form Asg-+-FeSz, differing from the a 
ula, F 
i Biel Suppl. III), which corres aed te 3Fe si hoFet Ast ka 
t of i a Swf cies the aa ses rs be due to the fact that _ 
of smal frag- 
ecomposition by simply boiling in water. The s 
Jr to be 6-043 ong that of ie powder boll ior some time in 
of sulphuric acid, iron and arsenic were oa ia ra tio 
0. v. Hauer obtained in two analyses of mispickel from Kindberg in Styria: 
Bi Al y : 
9 = 99°2 
50 10 0-3 80:8 432 apr 
0-7 08 tr. st, 210, 
Jahrb. d. k. kc geolog. Reichsanstalt in Kopp’s Jahresbericht f. ; es of the ter: 
ing to Daubrée (Compt. Rendus, 1858, xIvii, 959) the (ore ct og 
tiary — at Lobsann (Lowe Rhine) 9 —7 pers the — loa a fine 
seaic, on dissolving the paint giv 
*morphous en ny Sono to pe "2 P- pe) is obtained, which see 
tions of mispicke 
