368 Supplement Jo Dana's Minerallley 
ALINE EFFLORESCENCE from the Desert of Atacama.—F. Field, Quart. J. Chem. Soc., 
vii, 308. A few miles to the east of the port of Caldeca in the north of Chili, the 
soit for many leagues around is white with a saline efflorescence looking like a re 
fall of snow. An analysis sieeed a 
anne Cli963 Na27-17 Ca 672 Mg4i5 H1280 ° 
with traces o Sets er = and carbonates of lime and a which corresponds to 
the following, part of the sodium being united to the chlorin 
pad 41-17 Gad 16°32 Mg$ 1375 NaCl 15°60 tt 12:30 = 99°74 
with, it for along time. Soluble in dilute hydrochloric acid with searcely percepti- 
ble shhh ot Slightly alkaline to test paper, owing probably to a trace of car- 
is ; it posits r 
per of caittaatene of soda. One pound of ihe soil produces more than its own 
we ed of crystallized sulphate of soda. ; 
Ligeti sag of a pioutil from near Perth, Canada, by T. S. 
Lire [p. 
Font U a ee Rep. Geol. Surv. Canada, 1852-53, p. 268) found in a boulder; 
=5'°5; G,=2'640-2° ‘87, color jae Stay 5 subtransluce 
Si Al © Me ign. 
46°30 26° rod 0:60 : 12°88 3°63 a 88 + 30, 2°80 = 99°59 
nee fr y scapolite in th ge proportiop of potach and also the mag- 
nesia 
ee 419, 511].—Occurrence in Cabarras Co., N. C,, FA. Genth, Am. J, 
Sci. [2], xix, 
ScotecirE fos 328)—. prey of scolecite from the E. — by W. L Taylor in 
the laboratory of Dr. F. A. Genth, Am. J. Sci., [2], xviii, 
SeLapontre (Terre Sante —-The analysis, p. 511 of 3 is panera ain in the 
. d. Mines, [5], iv, 851. ' 
SERPENTINE [p. bas 11}—The crystals of Dre ee from East were ex: 
amined and pronounced pseudomorphs after hornblende and “aogite +e G. Rose 
(Pogg., Lxxxii, 511). The angles of the e augite ge given by Rose, agree 4 
with those of ea one only gave a hat of O74, which was 1°48! 
_ Hermann has since measured the homblenie a Poee. ee 287), and 
ained ~ 
and finds 
divergence from unaltered h ao 
(instead - 148° 30’), and OQ: ii=112° 4’ T (ostend of “104° 50 ’). He regards 
these hornblendic and augitic forms, as new species of serpentine eo not pseudo- 
mor} 
[ writer has received a hornblendic re crystal gong Dr. E. Swift 
of Easton, which gives for -1:-1, 148° 15’~148° 30/, tery Ahr -prcomarnch. A 
niometer (with the reflection va ba light of a candl a 
104}-105° for the edge —-1:-1 on éé (an uneven pases ‘plane) sit thew tt 8 rnd 
mon goniometer; (it is 106° in homnbl variations fr 
angles are therefore evidently irregularities, and there is no Bo et 9 reason a re- 
garding the crystals as other than pseudom Dr. Swift observes that there are 
se eile of augite and hornblende of similar form in the same vicinity—-] 
Severire {p. 504).—Analysis of re from St. Sévére, in France, by ©. ¥- 
Hauer (ahrke | Reichs., 1853, 826) : 
Bi4a42 “2 36:00 Ca065 H 1840, (of which 2:95 lost at 100° C= 9947 
98 parts of silica, 7 alumina and 17-17 water. water. Amorphous and ei 
with a white ola 
Stiver Grancr.—The ore of Prince’s Location, on, Lake Sopra, pon 
silver in thin in caleite with quartz, silver See ee ase 
and erythrite; ae mamers s of the crude ore afforded T. 8. eee Leen 
containing Logan’s Report Geol. Surv. Canada). 
eto 
wn by De F. “ee 
