ROCKS AND MINERALS OF UNITED STATES. 287 
^ ^ r J w i ^ great variety , of vegetable organic 
^ ^ Coal Measures. ^ remains ; iron ore in large quantities, &c. 
r Tir ir . n> : ( Anthracite, plumbago, different ores 
I Millstone Grit , epidote, zoisite, asbestos, cop- 
I I Old Red Sandstone. { ^ ^^^{^^.^^ ^^^^^^ 
J Graywacke. ^ carbonate of lime. 
§ I Transition or Mountain i Ores of lead, zinc, copper, gold, 
^ I Limestone. < quartz crystals, calcareous spar, 
\^ Argillaceous Slate. ( &c. 
f Magnetic oxide and hydrate of iron, iron 
I pyrites, copper, white augite, scapolite. 
Primitive Lime- j tremohte, graphite, argentine, sphene, 
stone. \ spinelle, magnesia, molybdena, epidote, 
I garnet, satin and rhomb spar, actyno- 
Uite, phosphate of lime, serpentine, &c. 
( Brown hematite, iron pyrites, horn- 
Quartz Rock. < blende, chalcedony, hornstone, jasper, fer- 
( ruginous quartz, quartz crystals, &c. 
( Calcareous spar, alum, phosphate of lime, 
I fluate of hme, amianthus, different varieties 
I of quartz, manganese, the ores of iron, lead, 
Mica Slate. { zinc, titanium, sulphur, anthracite, sappare, 
I staurotide, garnet, epidote, zoisite, idocrase, 
I stilbite, analcime, chabasie, schorl, horn- 
blende, emerald, cyanite, &c. 
{ Native gold, blue and green carbonate of 
I copper, ores of iron, native magnet, manga- 
Talcose Slate, { nese. arsenic, titanium, tremohte, asbestos, 
I hornblende, actynolite, bitter spar, yenite, 
V molybdenum, &c. 
( Amianthus, asbestos, actynolite, chalcedony, 
Serpentine. < garnet, steatite, talc, quartz, magnetic iron, 
( chrysoprase, &c. 
f Red oxide, titanium, sphene, feld- 
TT L7 J o7 * J spar, epidote, arsenical cobalt, garnet, 
Hornblende Slate. < ^^^^^^ micaceous oxide of iron, pyrites 
Vof iron, &c. 
f Graphite, epidote, ores of iron, molybdena, 
I schorl, garnet, hornblende, actynolite, beryl, zir- 
Oneiss. 4 con, chrysoberyl, talc, adularia, copper, titanium, 
I quartz, amethyst, chalcedony, ifeldspar, steatite^ 
I, serpentine, alum, stilbite, emerald. 
