368 Highth Supplement to Dana’s Mineralogy. 
berg. ahowing this mineral to be a mixture of arsenolite, cuprite, copper-glance, and 
i aa 
nid of ¢ 
Corrrras [p. 33 ae cupriferous variety of copperas from a mine of chaleo 
rite in Turkey has been analyzed by Pisani (Comptes heres, Ae 18, om 
Color like that of ¢ ceiaiin, on peer assumes an ochreou 3 
s | 
15° 56 10: 98 29:90 ro e 
‘ giving the formula (Fe Cu)S+-7H, or copperas in bate es Pe a the iron is re- 
placed by copper—(L. E. and D. Phil. Mag., [4], xvii, 
Corrrr Nioxet [p. 52, VI]—According to G. Rose and Néggerath the co Bai 
nickel ate Sangerhausen crystallizes in the hexagonal form.—(Zeitschrift 
chen geolog, Gesellsch. »X, 91; Verhandl. d. naturhist. Ver d, Rheinlande, < xy.) 
CYA ANOLE. CENTRALLASSITE, CERINITE, H. How, (Ed. new Phil 
Jour,, x, 84).— . How has described three new species of silicates occurring in 
a reniform nodule in the trap of the Bay of Fundy, one mile east of Black ack Rock, 
The fF 
> 
nes 
wax (cerinite), then a portion — a stellated rsa and a highly ood 
lustre (centrallassite), —— the e was principally made up of a bluish-gray 
s=4" oi 
dull, color bluish-gray; sub-translucent in’ thin pieces, and the powder t 
under the hicrosnes. Decomposed with ¢ blorhyaiie acid, Bait, pad os 
but does not gelatinize oe efore or after heating. In ss becom 
and gives off water. in platinum forceps fuses fo es a hin cigs 
soda and borax gives transparent beads, with salt of phosphorus a transluce nt glass 
Analysis gave— 
8i Al Oa g K TH 
1 7415 084 1752 é. 053 739==10048 
2 72521841819 tr, O61. OOS 9847 
Analysis No, 2 was made-on a specimen not perfectly free from centrallassilé 
Disregarding the small amount of Fr tae and potas h in No. 1, we have the oxyge? 
ratio Oa: Si: H as 1:7°85:1-81 or 4: $140: 5-2, from which Prof. How draws the 
pone + Oa'Si10-+ 5H =Si 74-26, Ca 18-36, Hf 7°37. Considering the a 
the of the oxygen in all the bases to that of the silica is md 1: 3°2, appre ey 
ing tot that of Edelforsite, Ca Si or 1: 3. ane opi — in allusion 
: fro associa ant the 
_ 2, Centrallassite occurs in spherical arctan Sty eet the ear 
rind. The concretions when 8 a have a lamellar structure and cons! 
arly lustre, bt ore a 
into opaque e€ form. Centrallassite has a white, sometimes yello he 
translucent, transparent in thin plates ; pers lustre sub-resinous; hardn wit, 
fics gh mie eu Cc ras ae z 
eve FOMny, Wi ing, to an aoa ue glass, with the fluxes 
pe eta os posed by he re acid gue gelatinizing. The result of 
Bi Al Ca Mg K bet 
59-05 100 2786 0290  undet. 1-40 
5867 =: 128897) 9-18 059 11-43 = 10007 
en ratio of the mean of analyses for the ce silica and 
i mee "271==4 : 15°64: 5-08, Nd Prof. es Sig duane cee irae 
bH=Si 59-06, Ca 29-20, 111-74, From two ee are an 
estimation of tthe silica, the 0 Pg mineral was proved to have the sae 
tion as the transparent yariet 
