DETERMINATION OF MINERALS. 40d 
PINITE, p. 312. H.=2°5-35; G.=—2°6-2°85; lustre feebly waxy ; 
gray, gnh, bnh. B.B. fuses; yields water. 
DAMOURITEH, p. 318. Same as crystallized, p. 403, but in mas- 
Sive aggregation of scaies. 
tt Hardness 3°5 to 65; lustre often pearly on a cleavage surface, 
but elsewhere vitreous. 
PREHNITE, p 295. H.—6-6'5; G.—2'8-3; pale green to white ; 
crystals often barrel-shaped, made of grouped tables; B.B. fuses 
very easily ; decomp. by HCl. 
PECTOLITE, p. 298. H.=5 ; G.=2°68-2°8 ; white ; divergent fibrous, 
or acicular; B.B. fuses very easily; gelatinizes imperfectly with 
HCl. 
APOPHYLLITE, p. 294. H.=45-5; G.=2°3-2°4; white, gnh, ywn, 
rdh ; dimetric, one perfect pearly cleavage transverse to prism ; 
B.B. fuses very easily ; a fluorine reaction ; decomp. by H Cl. 
CHABAZITE, p 300. H.=45; G.=2-2:2; rhombohedral, vitreous ; 
white, rdh ; B.B. fuses easily ; decomp. by HCl. 
HARMOTOME, p. 301. H.=4:5; G.=2°44; white, ywh, rdh; 
crystals twins, usually cruciform ; B.B. fuses not very easily ; vitre- 
ous in lustre ; decomp. by HCl. 
STILBITE, p. 302. H.=3°5-4; G.=—2-2:2; white, ywh, red; crys- 
tallizations often radiated-lamellar; one perfect pearly cleavage ; 
B.B. exfoliates, fuses easily ; decomp. by HCl. : 
HEULANDITE, p. 303. H.=—8'5-4; G.=2-2; in oblique crystals, 
with one perfect pearly cleavage ; B.B. same as for stilbite. 
BUCLASE, p. 288. H.=7-5; G.=—8:1: in glassy transparent mono- 
clinic crystals; B.B. fuses with great difficulty ; gives water in 
closed tube when strongly ignited. 
Prehnite, apophyllite, chabazite, harmotome, heulandite, and euclase 
never occur in fibrous forms. 
fs. REACTION EITHER FOR PHOSPHORUS OR BORON. 
VIVIANITE, p. i184. H.=15-2; G.=2-55-7; monoclinic with one 
perfect cleavage ; white, blue, green; B.B. fuses very easily, the 
flame bluish green, a gray magnetic globule ; in HCl sol. 
ULEXITE, p. 212. H.=1; G.=1°65; white, silky, in fine fibres; 
B.B. fuses very easily, and moistened with sulph. acid flame for an 
instant green, owing to the boron present ; little sol. in hot water. 
PRICEITE (p. 212) is in texture and color like chalk; similar to 
ulexite in green flame B.B. 
Borax and Sassolite are other soft minerals containing boron, but 
these have taste. 
b. Anhydrous. 
a. B.B. the flame lithium-red. 
SPODUMENE, p. 248. H.=65-7; G.=313-3:19; white, gyh, gnh 
white, monoclinic (like pyroxene), with J /AJ=87°, and perfect 
cleavage parallel to J and 7-7 ; B.B. swells and fuses. 
