ROCKS AND MINERALS OF UNITED STATES. 287 



SI 



r J M i ^ £ rea t var i et y °f vegetable organic 



Coal Measures. ^ remams . j ron ore i n i ar g e quantities, &c. 



. r* * ( Anthracite, plumbago, different ores 

 Millstone tmr. ■ of ir ep id 0 te, zoisite, asbestos, cop- 

 Old Red Sandstone. < adularia quartz, sulphate, flu ate 

 •Z ( Graywacke. Und carbonate of lime. 



Transition or Mountain C Ores of lead, zinc, copper, gold, 

 Limestone. < quartz crystals, calcareous spar, 

 l_ Argillaceous Slate. ( &c. 



( Magnetic oxide and hydrate of iron, iron 



j pyrites, copper, white augite, scapolite, 



Primitive Lime- J tremolite, graphite, argentine, sphene, 



stone. \ spinelle, magnesia, molybdena, epidote, 



I garnet, satin and rhomb spar, actyno- 



V, lite, 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, 



fluate of lime, amianthus, different varieties 



of quartz, manganese, the ores of iron, lead, 



Mica Slate. { zinc, titanium, sulphur, anthracite, sappare, 



| staurotide, garnet, epidote, zoisite, idocrase, 



I stilbite, analcime, chabasie, schorl, horn- 



V blende, emerald, cyanite, &c. 



^ f Native gold, blue and green carbonate of 



fi, | copper, ores of iron, native magnet, manga- 



Talcose Slate. { nese. arsenic, titanium, tremolite, asbestos, 



j hornblende, actynolite, bitter spar, yenite, 



V molybdenum, &c. 



( Amianthus, asbestos, actynolite, chalcedony, 



Serpentine. < garnet, steatite, talc, quartz, magnetic iron, 



( chrysoprase, &c. 



( Red oxide, titanium, sphene, feld- 



tt li j 07 * J s P ar > epidote, arsenical cobalt, garnet, 

 Hornblende Slate. < ^ micaceous oxide of iron> * yrites 



(,of iron, &c. 

 ( Graphite, epidote, ores of iron, molybdena, 

 I schorl, garnet, hornblende, actynolite, beryl, zir- 

 Gneiss. j. con, chrysoberyl, talc, adularia, copper, titanium, 

 ' quartz, amethyst, chalcedony, feldspar, steatite, 

 serpentine, alum, stilbite, emerald. 



