6 NEW YORK STATE MUSEUM 
COMMON MINERALS FOUND IN CRYSTALLINE LIMESTONES 
graphite dolomite garnet 
sphalerite : siderite titanite 
pyrite pyroxene tourmalin 
marcasite wollastonite _ chrysolite 
quartz amphibole humite group 
corundum wernerite muscovite 
spinel vesuvianite phlogopite 
rutile  ZTCon = clinochlore 
brucite danburite . talc 
calcite epidote apatite 
Crystalline schists. A characteristic weries of minerals, for the 
most part silicates, is found in micaceous, hornblendic and argil- 
laceous schists. They occur embedded and disseminated through 
the mass of the rock and reach their highest development along 
the contact portion of the rock mass. 
COMMON MINERALS FOUND IN CRYSTALLINE SCHISTS 
quartz cyanite biotite 
chrysoberyl andalusite iolite 
amphibole sillimanite tourmalin 
garnet staurolite beryl 
zircon muscovite 
Serpentines and tale. The minerals occurring in serpentine are 
in some cases the unaltered species from which the serpentine was 
derived, in other cases secondary minerals resulting from a fur- 
ther alteration of the serpentine. They occur embedded and in 
veins of various thickness traversing the serpentine masses. 
COMMON MINERALS FOUND IN SERPENTINE AND TALC 
quartz (chalcedony) magnesite garnet 
spinel enstatite clinochlore 
chromite ae pyroxene ~ tale 
brucite amphibole deweylite 
dolomite chrysolite apatite 
calcite 
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