Mineralogy and Geology. 105 
2. Mineralogical Notices; by W. T. Buaxe.—Apatite.—During 
the past winter a shaft has been sunk upon the vein of crystalline 
phosphate of lime at Hurdstown, Essex Co., N. Y., and large blocks 
of massive apatite have been raised; some of the largest of these 
_ Masses weighed not less than 200 pounds, and were nearly pure apa- 
tite,—the specimens have very little color, portions of the masses be- 
ing translucent and nearly transparent, and resembling the ‘ asparagus- 
Stone” variety of the mineral. The more compact and opaque masses 
frequently cleave into hexagonal prisms, some of them having lateral 
planes three inches wide. Rhombohedrons resulting from cleavage 
are not unco n. 
Brown Tourmaline.—Beautiful transparent crystals of brown tour- 
maline occur disseminated in the massive and concretionary phosphorite 
at the * eupyrchroite” locality, Crown-point, Essex Co., N. Y.; termi- 
nated crystals are rare, but the few found are highly modified, and are 
crystallographically similar to the crystals from Gouverneur, N. Y., de- 
scribed and figured by Rose. (See Dana’s Mineralogy, p. 136.) ‘Tbe 
color is a light clove-brown, and the crystals exhibit dichroism. Spe- 
cimens cut and polished have much beauty as gems. 
Red Zine Oxyd.—Fine cabinet specimens of lamellar ae zinc fa 
e 
; good crystalline 
Specimens of franklinite are now very rare at the mine. 
pe 
Mens recently obtained, but in color they much resemble some speci- 
os of chromate 
Sheldon, notified us a few days ago, is likely to prove one of the:-most 
| be seen 
> be wi on that island, and 
destruction of the beantiful town of Hilo, by the - 
© give below the letters of our correspondents, which reach down 
to the 20th ult. a ; 
_. * This Jour, vol. xitiy p, 116. 1852. Pe 
Szconp Srgtes, Vol. XIV, No. 40.—July, 1852. 
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