A Handy-book of Rock Names, with Brief Descriptions of the Rocks |
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Page 27
... Varieties in Composition . A. PYRITOUS INTRUSIVE , or HIGHLY SILICEOUS Gra- When pyrite or marcasite is a com- ponent , galenite and chalcopyrite often occur as accessories . a . Beresyte , Beresite . - Pyritous highly siliceous granite ...
... Varieties in Composition . A. PYRITOUS INTRUSIVE , or HIGHLY SILICEOUS Gra- When pyrite or marcasite is a com- ponent , galenite and chalcopyrite often occur as accessories . a . Beresyte , Beresite . - Pyritous highly siliceous granite ...
Page 32
... composition , which in part seems due to its metamorphic origin . Many minerals occur locally as adjuncts ; such as amphi- bole , titanite , ripidolite , pyrite , marcasite , & c . , forming different varieties . NOTE . - Haughton is of ...
... composition , which in part seems due to its metamorphic origin . Many minerals occur locally as adjuncts ; such as amphi- bole , titanite , ripidolite , pyrite , marcasite , & c . , forming different varieties . NOTE . - Haughton is of ...
Page 35
... composition appears very similar to the veins of segregation ( granityte ) that occur in the highly siliceous ... varieties ; and the Acid or highly siliceous igneous rocks may change into a rock like the finer varieties of the Intrusive ...
... composition appears very similar to the veins of segregation ( granityte ) that occur in the highly siliceous ... varieties ; and the Acid or highly siliceous igneous rocks may change into a rock like the finer varieties of the Intrusive ...
Page 40
... varieties , weather with the even flow- ing surface so characteristic of the Felstones , and not with the rough ... Varieties in Composition ORNIA . A. FELSITIC 4.0 HANDY - BOOK OF ROCK NAMES .
... varieties , weather with the even flow- ing surface so characteristic of the Felstones , and not with the rough ... Varieties in Composition ORNIA . A. FELSITIC 4.0 HANDY - BOOK OF ROCK NAMES .
Page 41
... into more or less compact varieties . Varieties in composition are , -a . Micaceous ; b . Chloritic ; c . Felspathic ; d . Pyritous ; respec- tively , as different minerals give a marked character ; INGENITE REESE LIBRARY 41.
... into more or less compact varieties . Varieties in composition are , -a . Micaceous ; b . Chloritic ; c . Felspathic ; d . Pyritous ; respec- tively , as different minerals give a marked character ; INGENITE REESE LIBRARY 41.
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A Handy Book of Rock Names: With Brief Descriptions of the Rocks (1873) G. Henry Kinahan No preview available - 2008 |
Common terms and phrases
aggregate of quartz amphibole Amygdaloidal appear Arenaceous Argillous Augyte basic beds Bituminous Breccia Calcareous called Carbonaceous Chloritic classed clay coal colour compact Concretionary conglomerate Conglomeritic constituents containing Cotta crystalline crystals Cupriferous deposited Derivate rocks Diabase Dioryte Dolomitic drift dykes earth elvanyte Euryte felsitic felspar felspathic felstone Ferruginous Fibrous fissile foliation formed gneiss Gneissoid gneissyte granite granitoid granityte granular grit Group Hematitic Hornblendic igneous rocks ingenite rocks intrusive granite Ireland Jukes labradorite lamination latter layers less Lignyte limestone marcasite marl mass matrix metamorphic metamorphosed mica Micaceous minerals Nodular occur oligoclase oligoclase granite Ophyte orthoclase passage-rock Plutonic rocks Porphyritic Protogene pyrite pyroxene quartz Quartzose quartzyte reddish Ribaned ripidolite sand sandstone schist schistose sedimentary rocks shale siliceous slate slaty sometimes Spheroidal Steatyte Structural Varieties Subgroup Subvar Subvarieties surface Syenyte talc Talcose texture Trachyte tuff Tuffose turf usually Varieties in Composition veins of segregation Vesicular Volcanic weather Whinstone