206 Second Supplement to Dana’s Mineralogy. 
Maevetrre [p. 405].—Loe. in California. Am. J. Sci. [2], xx, 8 
¥ Matacnite ip. 458].—Analysis of malachite from ee 3. L, Smith, Am. 
Sci. [2], xx 
bape one in the Jura.—A. Miller, Verh. Nat. Gessellsch. in Basel, 1844, 95. 
ManGaneseE spar, see Rhodonite. 
an ounce in we ight, t, loo kin ng like black copper, r, from the south part of the Bed Rive 
near the Witchita Mo . = i fragmen 
e eof ac , givi ae lue an : still pete 
tinct with the blowpipe; chlorid of copper is volatilized and spreads over the char- 
coal support; pure co nally obtained. ed mineral almost wholly dis- 
solved in ammonia, giving out muriatic acid. bpetran ns copper 54°30, oxygen and 
chlorine 36°20, water 9'50=100.—Marcy’s Expl. Red River, 8vo, p. 135. 
1854 
Ic copper from the same region afforded copper with traces of iron 35°80 (to 
wow, lca 30°60, oxygen and water 34:10==100. (Ib.) 
Meronire [ Sg porcine of crystals from Vesuvius by Rammelsberg 
(Pogg., xciv, re 1: r summit 116° 12’, giving for basal angle 63° 48’ and 
for pyramidal angle 1 ise” 3” ; the last ai by observation, 186° 12 
Measurements by Kok scharoy (Min. gees » i 105) 1: mise 11’ or 136° 10’— 
186° 114. Mizzonite affords 1:1—135° 5 
- MELANCHYME, Haidinger—A bitumen-like substance of earthy facta wl 
curring according to ie er fa Zweufelsreuth in the district of Eger. Kenngott’s 
Min, ; ny for 1853, 
MELLIre Ip. = 5).— git Re measurements of — from’ es afforded (P: OBg. 
xciv, 410), for the pyramid 118° 14’, whence a:e= 1°34:1: ffer obtained 118 
13}/, Semenls ed ef > ae 118° 14}, Breithaupt, 118° 16% Phillips, 118° 17’, 
Mica [p.217].— f Vesuvius and sus- 
tains the conn ‘ii, For sl., , p-126, Poge. xciv, 212), that is monecline. He 
btain of his results, J: J=120° 45’, 0: = , O:1=106° 54’, 
Foes soe” T: 1=154° 29’, ie i#=119° eo Ge 29/, ii Hi=iss® 
is = 30°. 
pyram He also shows that the striw and lines and t ransverse cleavage, 
Producing what is called prismatic mica, is due to the seisslaton of thin plates of 
» Batvacts of mica (muscovite according to Hai er, for extraordinary ay, 
ost. , alg tae noite Wien Tet ee a 
s. 8. Ha ue on refers to Margarodite, hich h stains as a good species, micas 
from Ireland, aid with the plete aici (Phil. Mag. [4], ix, 272): 
Si AL Fe Ga M kK Na 
1. Dublin Co. 43°47 31:42 4°79 1:38 1: 1B 10°71 1:44 oi =907T 
2. Wicklow Co. 4471 3113 469 1:09 090 991 1:27 622=9992 
> pon Co. 4464 3018 635 ——- O72 1240 tr. 632==90°61 
4, (mean) 4427 30°91 527 082 0-92 11°01 090 66 
Oxygen ratio for R, 8, Si, R, Pree’ bit oud, 1:13 : 6-00: 8:59: 1-80 = - 
a 6: es 2088; for No. 3, 0 See 177; _for ss 
author’  . 
[p. 49]—In the Millerite of Joachimstahl, Kenngott observes (Min. Not. 
planes of the fundamental hexagonal prism and the one intermedi- 
