Geological Bulletin, Volume 5University of Peshawar - Geology |
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Page 102
Hornblende is 3 - 8 mm long , anhedral to sub - hedral , pale green to pale yellow
pleochroic , and has brownish iron oxide along fractures , cleavages and grain
boundaries . Some grains have abundant inclusions of feldspar , epidote and ore
...
Hornblende is 3 - 8 mm long , anhedral to sub - hedral , pale green to pale yellow
pleochroic , and has brownish iron oxide along fractures , cleavages and grain
boundaries . Some grains have abundant inclusions of feldspar , epidote and ore
...
Page 104
Some of the pyroxene is ophitic in texture and many of the large grains are
schillerized . Hornblnde - bearing and very co ? isc - grained pegmatites (
genetically related to dioritic rocks , probably ) occur at many places . They may
be ...
Some of the pyroxene is ophitic in texture and many of the large grains are
schillerized . Hornblnde - bearing and very co ? isc - grained pegmatites (
genetically related to dioritic rocks , probably ) occur at many places . They may
be ...
Page 105
This might suggest that the olivine grains increased in volume because of
alteration . In the pyroxene - bearing rocks , most of the ore is secondary . There ,
also , is a green spinal which , in some cases , forms a myrmekitic intergrowth
with the ...
This might suggest that the olivine grains increased in volume because of
alteration . In the pyroxene - bearing rocks , most of the ore is secondary . There ,
also , is a green spinal which , in some cases , forms a myrmekitic intergrowth
with the ...
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abundant Agency Ahmad altered amphibolites appears associated Attock Slates Attock-Cherat bands base basis brown Bull Cherat chlorite clay colour common composed composition considered contains correlated Cretaceous Davies deposits detailed developed diorites District east epidote exposed extends feet feldspar Formation fossils fractures garnet Geol geology Gilgit gneisses grains granitic green grey Hazara Hornblendic Group Ibid India Indus intrusions iron Jour Khan Khyber latter light limestone Long Lower mainly major Manki Marks Martin Masjid material metamorphic Middle miles minerals minor norites northern occur outcrops Panjab Peshawar Phyllite places plagioclase present probably quartz quartzite Range reef region reported River rocks samples sandstone Schistose schists sericite Shah shale shows Silurian southern Stauffer stratigraphic structure suggests Surv Swat Tahirkheli thick thin Thin Section units Univ Upper Valley various veins village weathered West Pakistan western