ee ae eee. eee 
form 
Mineralogical Notices. 249 
This corresponds to sre C+2Mn 43626. The mineral resembles 
the kapnite, a calamine containing over 15 per cent. of carbonate 
of iron (zinkeisenspath, of the Germans). 
shmhag Calamine from Altenberg, and from Retzbanya, 
ungary.—Analyses by K. Monheim, (ibid, xlix, 319, from the =~ 
same. ) 
Si Zn Pe 6 
a Altenberg, ons i 24°31 65°74 0°43 0°31 51= 9830 i 
- 25°40 67°05 — 031 T47=100238 
3. Retzbanya, 25°34 67-02 068 ~. 0°35 758=100°97 , 
The results sustain the formula deduced by Berzelius, 2%m* Si+3H.” 
Specific gravity of the Altenberg mineral, 3:43, 3-45, 3-47, 3-49. 
Manganesian Calamine.—Analyses by K. Monheim, (ibid, © 
xlix, 382, from the same) ; 1, from Herrenberge near Riom, in pale 
green rhombohedrons: G. = 4-03. 2, ibid, dull green, G G.=3 ‘983. 
3, from Altenberg, G.= 4-20. 
nG MnO FeO MgO Gad 
‘8 8578 T62 924 444 098, §i009, ,H. triee=101 e a 
2, 7442 1498 320 338: 168, «Si 0:20, ‘Ho: 98° a8 
3. 680 158 284 1:58, Electric ¢: be a 
Nontronite from Andreasberg. —Composition ac id s 
ner, (J. f. pr. Ch. vine. from Trommsdorff ‘sJ mee 2, (1825) a: 
Si Cas Fe ee 
“40495. 35-705 1095 , 1112 2-259 21:816=100-482. G23 
Pyrophyllite from Westand, (N. J. Berlin, Pogg., Lxx 
—This pyrophyllite occurs in a quartzose gangve alor 
2-78— alyse 
caceous iron ore. G.= 2:79. Analyses by a ¥ 
Si Al Be Ga Mg Min x a 
1 6777 «2517 «082-066 «026 «= 050 8210100. Plrigs 
2 6561 2609 070 0669 009 0-09 peers 4 
Oxygen, 34-09 1242 ne oo, 
three other trials, the ate came out 5-62, rage Ber" at 
In 
lin deduces the formula #2 Sis-+-21f = Silica 65 a5 ‘ailing 29- 28, ro 
water 5-12. The result is very near Rammelsberg’ s, who sug- « 
gested the same formula, and also as equally probable, age a9 
ilica 69 65, alumina 25-73, water 4 62. The composition, aS tay? 
Stated by Berlin, i is the same ' with that of an agalmatolite aenk oh 
By thier and ees remarks upon its aloes ss 
0 Cl ae : ‘- Ps 
__ Stilbite of Gastaphees Suiedin’ and Barbro 2 Mi e 2 
(ibid, ms An nalgess } y Sipe ris ang 
Al, 
: 
sr - toe 035. hee 
The ave was dried i in powd 
and in Yashe J und 
