A Handy-book of Rock Names, with Brief Descriptions of the Rocks |
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Page 39
... siliceous varieties , a considerable portion of the quartz crystallized out prior to the other minerals . The matrix may be siliceous ( felsitic ) or basic ( fel- spathic ) , and of a greenish , greyish , INGENITE ROCKS . 39 Schist.
... siliceous varieties , a considerable portion of the quartz crystallized out prior to the other minerals . The matrix may be siliceous ( felsitic ) or basic ( fel- spathic ) , and of a greenish , greyish , INGENITE ROCKS . 39 Schist.
Page 40
George Henry Kinahan. spathic ) , and of a greenish , greyish , brownish , blackish , bluish , or even yellowish colour : all of the yellowish , as also some of the blues , seem due to weathering . NOTE . Elvanyte naturally includes not ...
George Henry Kinahan. spathic ) , and of a greenish , greyish , brownish , blackish , bluish , or even yellowish colour : all of the yellowish , as also some of the blues , seem due to weathering . NOTE . Elvanyte naturally includes not ...
Page 46
... greenish , purplish , or bluish in colour ; when yellowish or 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 ...
... greenish , purplish , or bluish in colour ; when yellowish or 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 ...
Page 47
... distinct crystals of orthoclase or oligoclase , or amphibole . a . Fraidronyte - Fraidronite .- " A greenish fels- pathic principal mass combined with a greater or less quantity of mica . Pyrite and quartz occur INGENITE ROCKS . 47.
... distinct crystals of orthoclase or oligoclase , or amphibole . a . Fraidronyte - Fraidronite .- " A greenish fels- pathic principal mass combined with a greater or less quantity of mica . Pyrite and quartz occur INGENITE ROCKS . 47.
Page 48
... greenish in colour ; may be vesicular or amyg- daloidal ; when heated before the blowpipe in thin pieces , it fuses with greater or less fa- cility . It is often columnar . In A.D. 1817 Daubuisson proposed the name Eurite for the basic ...
... greenish in colour ; may be vesicular or amyg- daloidal ; when heated before the blowpipe in thin pieces , it fuses with greater or less fa- cility . It is often columnar . In A.D. 1817 Daubuisson proposed the name Eurite for the basic ...
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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