A Handy-book of Rock Names, with Brief Descriptions of the Rocks |
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Page 29
... reddish colour , Delesse and others erroneously call them " eurites , ' although they are quite dissimilar to the original eurytes of Daubuisson . Rose , on the other hand , describes a granite apparently identical with them , and calls ...
... reddish colour , Delesse and others erroneously call them " eurites , ' although they are quite dissimilar to the original eurytes of Daubuisson . Rose , on the other hand , describes a granite apparently identical with them , and calls ...
Page 30
... reddish , grey , greyish , or bluish , weathering white . " - Cotta . To the naked eye this rock does not appear to contain either mica or quartz ; however , with a lens , both of these substances can be detected , but usually they ...
... reddish , grey , greyish , or bluish , weathering white . " - Cotta . To the naked eye this rock does not appear to contain either mica or quartz ; however , with a lens , both of these substances can be detected , but usually they ...
Page 46
... reddish , the colour seems due to weathering . Some are splintery , but usually they have from an uneven to a con- choidal fracture , and are translucent or sub- translucent . Some have a porcelanic , others a saccharoid aspect . a ...
... reddish , the colour seems due to weathering . Some are splintery , but usually they have from an uneven to a con- choidal fracture , and are translucent or sub- translucent . Some have a porcelanic , others a saccharoid aspect . a ...
Page 47
... reddish , the colour seems due to se- condary action . The texture of the matrix varies considerably sometimes it is compact like horn , with a smooth conchoidal fracture ; at other times it is granular , or saccharoid , or splintery ...
... reddish , the colour seems due to se- condary action . The texture of the matrix varies considerably sometimes it is compact like horn , with a smooth conchoidal fracture ; at other times it is granular , or saccharoid , or splintery ...
Page 63
... reddish or variegated . Dana divides massive serpentine into Precious and Common Ophyte . The first " is of a rich oil- green colour , of pale or dark shades , and translucent even when in thick pieces . " The common ophyte is of dark ...
... reddish or variegated . Dana divides massive serpentine into Precious and Common Ophyte . The first " is of a rich oil- green colour , of pale or dark shades , and translucent even when in thick pieces . " The common ophyte is of dark ...
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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