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Preliminary geology and petrography of Swat Kohistan
No 1 December
The geology of the Gandghar Range Distt Hazara N W F
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abundant acid amphibolites associated Bajaur bands beds biotite brines Bull calcite carbonates chloride complexes chlorite coarse-grained colour concentration correlated crystals dark deposits Deshai developed Dewangar diorites dolerite dolomite dykes east eastern epidote exposed extend feet thick feldspar fluid inclusions folded foliation fractures Gabral Gandghar Range garnet Geol geology glauconite gneisses gneissose grades grains granites graphite grey Hazara hornblende hornblendites hydrothermal solutions hypersthene igneous ilmenite Indus intrusions Kalam Group Khan Khussak Formation Kohistan layers limestone locally magma magnetite marble Matiltan Matsushita metals metamorphism miles mineralizing solutions Misri Banda Quartzite norites Nowshera occur outcrop Pakistan pegmatite pegmatite veins peridotite Peshawar phenocrysts phyllites plagioclase plutonic porphyritic pyrite pyroxene pyroxenites quartz quartzite region samples sandstone schists sediments sericite shale sheared Sirikot Sirikot Slates solubility sphalerite sphene sulphide sulphur Surv Swat Kohistan Tahirkheli temperature Tertiary thin transport Univ Upper Swat Ushu usually Utror valley volcanic rocks waters well-developed zone