Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 34
The carbonatites are mainly composed of calcite or dolomite but other
carbonates ( Sr - calcite or strontianite , siderite ) have also been found . Other
minerals include apatite ( almost ubiquitous ) , alkali pyroboles , biotite /
phlogopite , sphene ...
The carbonatites are mainly composed of calcite or dolomite but other
carbonates ( Sr - calcite or strontianite , siderite ) have also been found . Other
minerals include apatite ( almost ubiquitous ) , alkali pyroboles , biotite /
phlogopite , sphene ...
Page 102
The emerald - bearing rocks consist of carbonate ( calcite / dolomite but some is
stained brown and may be siderite ) , talc , serpentine , and minor opaque oxide .
Bright green chromian mica ( fuchsite ) and chlorite , and quartz occur in some ...
The emerald - bearing rocks consist of carbonate ( calcite / dolomite but some is
stained brown and may be siderite ) , talc , serpentine , and minor opaque oxide .
Bright green chromian mica ( fuchsite ) and chlorite , and quartz occur in some ...
Page 103
sodic pyroxene occurs in the rocks whilst calcite pseudomorphs afcer lawsonite
have been found in chlorite - phengite schists near Bania China , NW of Malam (
Bard et al . , 1979 ) . Other minerals found in these rocks are actinolite , sphene ...
sodic pyroxene occurs in the rocks whilst calcite pseudomorphs afcer lawsonite
have been found in chlorite - phengite schists near Bania China , NW of Malam (
Bard et al . , 1979 ) . Other minerals found in these rocks are actinolite , sphene ...
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Contents
The Geology and Petrography of the Tarbela Alkaline Complex | 1 |
Petrography of the Loe Shilman Carbonatite Complex Khyber Agency | 29 |
Major Elements Abundance in the Kalam Lavas | 45 |
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abundant albite albitites alkaline altered amphibole andesite apatite associated band basic beds belt biotite bodies brown Bull calcite carbonate carbonatite chemical chlorite complex composition consist contain deposits described detailed developed diorites dolomite epidote et al fault feldspar field Formation gabbroic Geol Geology gneisses grains granites granitic rocks green Himalayas hornblende igneous indicate Indus intrusions island arc Jurassic Kalam Karakoram Kempe Kohistan Late Limestone locally lower magmatic magnetite major margin metamorphism microfacies minerals minor muscovite normal northern obducted occur origin outcrop Pakistan Peshawar petrography phases plagioclase Plate Pleistocene present pyrite pyrochlore quartz quartzite range region reported river rocks samples sandstones schists sediments sequence sericite shales similar Siwalik sphene structure suggest Swat syenites Table Tahirkheli Tarbela tectonic thick thin Traces Univ University Upper Valley varieties veins volcanic Warsak West zone