: 2s 
wr Sele Hap msn aie ne rom oo 
256 Chemical formulas of the Silicaies. 
B. Hydrous. 
Calamine, Si]O.]Ra-+-naq SifO,|Zn.+ 3aq 
Cerite, “ SipO.](Ce, La, Di)a+aq 
Thorite, Si] O.] Th.+2aq 
Serpentine,* Si]O,] (a2, R)2-naq SiJO.](45.+3Mg).+aq 
Deweylite, « Si} Ox] (4e0+$Mg)o+4aq 
Hydrophite, . Si]O.|($H2+3(Mg, Fe))a 159d 
Genthite, Sif O.|(422+3(Mg, Ni))o+329 
Ekmannite,+ # SifO.](442-+3(Fe, Mn)).4 
Kaolinite,* SifO.1 (m2, BR)2+naq Si]O.] (Gu. +36 Al). +24 
Gillingite, Si] 0,1(R, BR)2-+naq SiJO.|(¢R+46Fe)2+28q 
ares Si10.1, B, BR). nag Sif O.]($e.+#(R, PF e))a +984 
Neo SifO, He-F , PMn))s-+$24 
rail (Fahlunite), « SijO.}(4u24 3B Al)s 
Killinite « SifO.](442-+#(R, BA]))o 
Prehaite, ; _ SifO.|(¢e—4 Ca-+3BAl)s 
Pinite,* SifO.| (Ho, Re, R, BR) Sif O.](PH2+-4(Ks, R, BAl))s 
ite, > Si]Ou(Zu2+$(E2,R)}+ gBAl)s 
Cillacherite,t = SipO.](42+4(—a, R)+$8Al) 
Paragonite, Si] Ou] (4s, RB», BR) Si] OuH( 282+ pave y2pPAls 
Damourite, “ Sifu] (2582 +7b" Kot & Al: 
Euphyllite, SifO.](R2, BR)+naq SipO.| (4s, wa)a-+- $6 Al)o+ha4 
In several of the above species the water is all basic; in the 
others partly or wholly an accessory ingredient. 
C. With other accessory ingredients instead of water. 
Helvite, SiJO,JRo+ Si10.1G0%o, Fe)4+}Be).+$Mns 
Danalite, “ Si]O,1(4Mn, Fe, Zn)-+4Be), +3205 
Sodalite, SifO,] (Bs, BR)a+ = Ids raa-f2BAl),+ Nac 
Hauynite, ss SifO.|(4(22, R)+$pAl)s 
Nosite, . SifO.|(dnastgp Alot yg? 
@ S=anhydrous sulphate of calcium, | & T==anhydrous sulphate of sodium. 
Sept ona Kaolinite wel Pinite are closely aegee in —s The pn” 
for the bases, silica water, in the first two is 3:4: 2, in the last, 3:4: " 
Pinite is an alumina-alkali se goblet and Kaolinite (Pholerite, ‘in part) an ala 
ay phyllite is fe! alumina tale, ” — Gieseckite, 
“Anite In¢ many pseudomorphous potash silicates; as Liebner! 
Dysyntribite, Pinitoid; Wilsonite, raced 3 Fellenberg’s green mineral reeesnl es 
compact green tale from the moraine of the Grindelwald glacier; and Giga” 
Iberite, P a eg Rosellan appear to be impure conditions of the speci 
t eR ite. xxvi, 21, 1867. ay 
+ Hiachers margarite from Pfitschthal, Kenngott’s Uebers., 1860, 
thor has learned from ~ Krantz that ee Thengovtte pri by Prof. G. 
— - speci nen, is the original m: <Lataps tg and tat 
masses i 
pind a pearl-white selec falincoraits abd gray ; it was sane a¥ 
es stinesl ore : Jn Jocality io 
tyrol, till CE Gitncher analy mromencnte tarts. se pa gy only kn with Rbatiite 
very near Kemmat ay da ae all eontai barytes, hago ao 
he gare the name margacic: oe vabout two aod a balf Gers 
