Practical Mineralogy Or a Compendium of the Distinguishing Characters of Miner
Practical Mineralogy Or a Compendium of the Distinguishing Characters of Miner
E J Edward John Chapman
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L. Kosemutz and Frankenstein in Silesia. Also, Vermont, N. A. (3) PLASMA. C. Grass-green ; semi-transparent ; L. Slightly waxy ; massive. P. L. India, China. A greenish calcedony, generally surrounded by a white earthy crust, and which has been referred to this variety, occurs also in Baden. (4) HELIOTROPE. C. Dark-green, often with spots of red jasper (bloodstone) ; massive. It is a mixture of calcedony and green-earth, or chlorite. P. L. Bucharia, Siberia, Isle of Rum, &c. (5) CAT'S-EYE. C. W...hite, grey, yellowish, brown, greenish, &c. ; massive, of a delicately fibrous structure, presenting (particularly when cut en cabochon) a cha- toyant play of light. * P. L. Ceylon. (C) Jasper Quartz. (1) STRIPED OR RIBAND JASPER. C. Green, grey, yellow, brownish, &c. ; in parallel layers ; massive ; opaque, with feeble or no lustre. P. L. Siberia ; Gnandstein, near Altenburg, in Saxony ; Devonshire. (2) COMMON JASPER. C. Brown, red, green, &c. ; massive ; dull, or with very feeble lustre, and opaque, except when in splinters.
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