Records of the Geological Survey of India, Volume 94The Survey, 1959 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 220
... crystals Occasionally , small pieces of rock crystals , some as long as 2.5 to 3.5 cm . are found in the geodes of trap rocks especially to the north - west of Patsar ( 20 ° 55 ' : 71 ° 01 ′ ) . They occur only in a sporadic manner and ...
... crystals Occasionally , small pieces of rock crystals , some as long as 2.5 to 3.5 cm . are found in the geodes of trap rocks especially to the north - west of Patsar ( 20 ° 55 ' : 71 ° 01 ′ ) . They occur only in a sporadic manner and ...
Page 304
... crystals in the groundmass . Apatite is mostly in the form of slender prismatic crystals and sometimes as hexagonal cross sections in the groundmass . Muscovite and sericite occur in minor amounts . The mineralogy of this lamprophyre ...
... crystals in the groundmass . Apatite is mostly in the form of slender prismatic crystals and sometimes as hexagonal cross sections in the groundmass . Muscovite and sericite occur in minor amounts . The mineralogy of this lamprophyre ...
Page 306
... crystals of these embedded in a glassy matrix . The silicates present are olivine , enstatite and plagioclase felspar . Olivine occurs in the form of bars , lamellae , fibres , plates and rounded granules , both in the chondrule and in ...
... crystals of these embedded in a glassy matrix . The silicates present are olivine , enstatite and plagioclase felspar . Olivine occurs in the form of bars , lamellae , fibres , plates and rounded granules , both in the chondrule and in ...
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Ajanta Caves amphibole amphibole bearing quartzites amygdaloidal assemblage Balasore Balasore coast basalts beds biotite calc-silicate rocks calcite cent chambers chondrules Coarse colour convolute laminations Cretaceous crystals Deccan Traps dipping district dolerites dune sands dykes east enstatite felspar ferruginous Figured specimen flows folds foraminifera formations G.S.I. Type garnet Genus Geol Geological Geologist Gir forest grade grains granites heavy mineral hematite hills hornblende ilmenite intergrowth kilometres kyanite length Lenticulina limestone magnetite manganese manganese content manganiferous khondalite Marginulina massive trap meta-sediments metamorphism meteorite metres metres long metres wide nala Nishkhal north-west occur old dunes olivine opaques Orissa outcrop phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Rajasthan Reuss ridge rutile samples sand dunes Sastry schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha river Surv sutures thickness thin trend Trichinopoly Utatur stage veins vesicles vesicular trap width zircon