Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
From inside the book
Results 1-3 of 8
Page 56
They generally contain hornblende, plagioclase and quartz with small amounts of
epidote, chlorite, calcite; zoisite, hypersthene, garnet, biotite; muscovite, sericite;
and magnetite in different samples. The hornblende is dark green in colour and ...
They generally contain hornblende, plagioclase and quartz with small amounts of
epidote, chlorite, calcite; zoisite, hypersthene, garnet, biotite; muscovite, sericite;
and magnetite in different samples. The hornblende is dark green in colour and ...
Page 64
In thin section the pyroxenites are coarse -graired hypidiomorphic and consist of
augite and hypersthene. Hornblende may be present upto 10%. Accessory
minerals associated with pyroxenes are sphene, ilmenite, ai d rarely pyrite which
is ...
In thin section the pyroxenites are coarse -graired hypidiomorphic and consist of
augite and hypersthene. Hornblende may be present upto 10%. Accessory
minerals associated with pyroxenes are sphene, ilmenite, ai d rarely pyrite which
is ...
Page 68
Well-developed corona structures are commonly observed aronnd hypersthene,
which is usually surrounded by augite, followed by hornblende and finally
chlorite at the outer most margins. Alteration of these pyroxenes to chlorite is
common.
Well-developed corona structures are commonly observed aronnd hypersthene,
which is usually surrounded by augite, followed by hornblende and finally
chlorite at the outer most margins. Alteration of these pyroxenes to chlorite is
common.
What people are saying - Write a review
We haven't found any reviews in the usual places.
Contents
Preliminary geology and petrography of Swat Kohistan | 1 |
No 1 December | 3 |
The geology of the Gandghar Range Distt Hazara N W F | 33 |
8 other sections not shown
Other editions - View all
Common terms and phrases
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