Larry Meinert Department of Geology Smith College Email ... - diabras
Larry Meinert Department of Geology Smith College Email ... - diabras
Larry Meinert Department of Geology Smith College Email ... - diabras
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Photos to accompany<br />
report on Bolivar<br />
skarn mineralogy<br />
<strong>Larry</strong> <strong>Meinert</strong><br />
<strong>Department</strong> <strong>of</strong> <strong>Geology</strong><br />
<strong>Smith</strong> <strong>College</strong><br />
<strong>Email</strong>: Lmeinert@smith.edu
Granodiorite porphyry<br />
Andesite
Granodiorite porphyry<br />
Andesite<br />
chlorite<br />
epidote<br />
DDH 28-60
wollastonite marble<br />
DDH 28-186 marble garnet<br />
vesuvianite
Irregular poikioblastic<br />
skarnoid garnet<br />
DDH 28-186 Clear metasomatic garnet rim
DDH 28-186 Bladed wollastonite
DDH 28-212 Bustamite<br />
Quartz-calcite-pyroxene<br />
wollastonite
DDH 28-218 Fibrous bustamite<br />
Metasomatic front
DDH 28-218 Fibrous bustamite<br />
Metasomatic front
DDH 28-218 wollastonite<br />
calcite
DDH 28-218 pyroxene<br />
Euhedral quartz<br />
calcite
Porphyritic andesite<br />
Biotite-altered phenocryst<br />
DDH 93-32 Pyroxene vein<br />
Pyroxene>garnet<br />
Kspar envelope<br />
garnet
Hydrothermal biotite<br />
DDH 93-32 Pyroxene vein<br />
Kspar envelope<br />
Porphyritic andesite
DDH 93-32 Pyroxene vein<br />
Kspar envelope
DDH 93-32 Hydrothermal biotite<br />
Hydrothermal kspar
Epidote<br />
DDH 93-35<br />
Epidote-chlorite-quartz-calcite-sphalerite<br />
Garnet-pyroxene
Host pyroxene<br />
DDH 93-35 Fluid inclusions with halite & chalcopyrite
DDH 93-35 sphalerite<br />
chlorite epidote
Uncrossed nicols<br />
DDH 93-35 epidote<br />
quartz<br />
Crossed nicols
DDH 93-35<br />
Vapor-rich<br />
inclusions<br />
Host epidote
granodiorite pyroxene<br />
DDH 93-89<br />
Red-brown garnet
DDH 93-35 Red-brown garnet<br />
pyroxene
sphalerite<br />
Vapor bubble<br />
halite<br />
sylvite<br />
DDH 93-35 chalcopyrite<br />
halite<br />
sylvite<br />
sphalerite<br />
Host pyroxene
Red-brown garnet<br />
Chilled, sheared contact zone<br />
DDH 93-92 Equigranular granodiorite
DDH 93-92 Equigranular granodiorite
DDH 93-92 Equigranular granodiorite<br />
Garnet skarn<br />
Chilled, sheared<br />
granodiorite
Garnet skarn<br />
DDH 93-92 Equigranular granodiorite
DDH 96-60<br />
Garnet-pyroxene-sphalerite vein<br />
Pyroxene skarn
DDH 96-60<br />
Pyroxene skarn
Uncrossed nicols Crossed nicols<br />
DDH 96-60 sphalerite garnet pyroxene<br />
Pyroxene skarn
DDH 96-60 Hydrothermal garnet<br />
Hydrothermal pyroxene
DDH 96-60<br />
Vapor bubble<br />
sylvite<br />
halite<br />
Pyroxene host
DDH96-60<br />
Vapor bubble<br />
chalcopyrite<br />
halite<br />
Pyroxene host
DDH 96-61<br />
Quartz-calcite-sphalerite-chalcopyrite veins<br />
Green garnet skarn<br />
Green garnet vein
DDH 96-61<br />
Uncrossed nicols Crossed nicols<br />
Early garnet<br />
Hydrothermal birefringent garnet
DDH 96-61<br />
Uncrossed nicols Birefringent garnet Crossed nicols
Uncrossed nicols Crossed nicols Reflected light<br />
DDH 96-61<br />
Cp<br />
Cp<br />
Sl Sl<br />
Sl<br />
Birefringent garnet<br />
Cp
Brown garnet<br />
Sphalerite-chalcopyrite<br />
DDH 96-76 Coarse-grained hydrothermal calcite
DDH 96-76<br />
Uncrossed nicols Crossed nicols<br />
calcite<br />
calcite<br />
Cp Cp
DDH 96-76<br />
Fluid inclusions in garnet
Chlorite-amphibole retrograde-altered garnet skarn<br />
DDH 96-88
DDH 96-88 Garnet remnants<br />
Chlorite
Amphibole<br />
DDH 96-88 Garnet remnant Chlorite
DDH 96-88<br />
Chlorite<br />
Fluid inclusion<br />
in quartz host
andesite<br />
DDH 96-101.5<br />
Chlorite alteration zone<br />
marble
“fresh” andesite<br />
DDH 96-101.5
andesite<br />
DDH 96-101.5<br />
Chlorite<br />
alteration<br />
zone<br />
marble
DDH 96-101.5<br />
chamosite<br />
chamosite
DDH 96-120 garnet<br />
chalcopyrite
Uncrossed nicols Crossed nicols Reflected light<br />
DDH 96-120<br />
Isotropic garnet<br />
Specular hematite<br />
cp cp cp
Equigranular granodiorite<br />
DDH 96-155 Quartz-chalcopyrite-chlorite-actinolite vein
Equigranular granodiorite Myrmekitic intergrowth<br />
DDH 96-155
Equigranular granodiorite<br />
DDH 96-155 chlorite<br />
actinolite<br />
cp
DDH 124-165 Olivine<br />
Magnetite
Uncrossed nicols Crossed nicols Reflected light<br />
mt<br />
DDH 124-165<br />
Olivine<br />
mt<br />
Pyroxene<br />
Bornite in chalcopyrite<br />
mt
Bornite<br />
mt<br />
DDH 124-165<br />
olivine<br />
Chalcopyrite<br />
mt<br />
Reflected light
Qtz-chl-cp-py vein<br />
DDH 124-256 Kspar-sericite envelope
Uncrossed nicols<br />
Crossed nicols<br />
DDH 124-256 Qtz-chl-cp-py vein Kspar-sericite envelope
chalcopyrite<br />
DDH 125-168 Garnet = pyroxene
Uncrossed nicols Crossed nicols Reflected light<br />
DDH 125-168<br />
cp<br />
Garnet chalcopyrite<br />
cp<br />
gar<br />
Pyroxene<br />
gar
DDH 125-168<br />
Fluid inclusions in pyroxene host<br />
with multiple daughter minerals
Mg skarn with olivine, pyroxene, clinohumite, vesuvianite<br />
DDH 125-172
Mg skarn with olivine, pyroxene, clinohumite, vesuvianite<br />
DDH 125-172
DDH 125-176 Biotite hornfels<br />
Pyx-kspar-ep
Uncrossed nicols<br />
py<br />
DDH 125-176<br />
Biotite<br />
Crossed nicols Reflected light<br />
pyrite chalcopyrite
Pyx-amph vein<br />
DDH 125-184 Chl-ep altered andesite
DDH 125-184<br />
Pyx-amph vein<br />
Chl-ep altered andesite
DDH 125-184 pyroxene<br />
amphibole