258 DESCRIPTIONS OF MINERALS. 
Pyrope. A magnesia alumina-garnet Mg;Al 0,.S8i;. Colot 
deep red, but varying to black and green. 
Spessartite. A manganese alumina-garnet (Mn, Fe),Al 
O,. Siz, some iron replacing part of the manganese. Color 
red, brownish red, hyacinth-red. A Haddam specimen af- 
forded Seybert, Silica 35:8, alumina, 18:1, iron protoxide 
14:9, manganese protoxide 31:0. 
IJ. [RoN-GARNET. 
Andradite. A lime iron-garnet, Ca,FeO,.81; Colors 
various, from that of almandite or common garnet, to a 
wine-yellow, as in Topazolite; green, as in Jelletite ; and 
black, asin JMJelanite and Pyreneite. 
Colophonite is a dark-red to brownish-yellow coarse gran- 
ular garnet having often iridescent hues. 
Aplome is ared variety. Jtothoffite has manganese in place 
of part of the lime, and a yellowish-brown to reddish-brown 
color. 
Vtter-garnet contains yttria in place of part of the lime. 
Bredbergite. A lime-magnesia iron-garnet. 
III. CHRoME-GARNET. 
Ouvarovite. An emerald-green lime chrome-garnet (Ca, 
Mg),;FeO, Si; G.=3°41-3-42. 
Diff. The vitreous lustre of fractured garnet, and its 
usual dodecahedral forms, are easy characters for distin- 
guishing it. 
Obs. Garnet occurs abundantly in mica schist, horn- 
blende schist, and gneiss, and somewhat less frequently i in 
granite and granular limestone; sometimes in serpentine; 
occasionally in trap, and other igneous rocks 
The best precious garnets are from Ceylon and Green- 
land ; cinnamon stone comes from Ceylon and Sweden ; 
grossularite occurs in the Wilui River, Siberia, and at Tel- 
lemarken in Norway ; green garnets are found at Schwartz- 
enberg, Saxony ; melanite, in the Vesuvian lavas ; owvaro- 
vite, at Bissersk in Russia; topazolite, at Mussa, ‘Piedmont. 
In the United States, precious garnets, of small s1Ze, OC- 
eur at Hanover, N. H.; and aclear and deep red variety, 
sometimes called pyrope, comes from Green’s Creek, Dela- 
ware County, Penn. Dodecahedrons, of a dark red color, 
occur at Haverhill and Springfield, N. H., some 14 inches 
through; also at New Fane, Vt., still larger; at Unity, 
Brunswick, Streaked Mountain, and elsewhere, Maine ; at 
Monroe, Lyme and Redding, Conn.; Bedford, Chesterfield, 

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