Diamonds and precious stones, a popular account of gems .. (1874)
Dieulafait, Louis, b. 1830, Sanford, Fanchon, tr · New York, Scribner, Armstrong, and Company · leaf 28
ipitous peaks, or vast cones, and sometimes inthose basaltic columns whose aspect is so strikingand impressive. The accompanying cut exhibits a good exampleof these basaltic rocks, but we may remark thatcolumnar basalt is comparatively rare, and thatigneous rocks in general possess no regularity… … Fig. 2.-—Horizontal Columnar Basalt at St. Helena. completely different from that of igneous forma-tions, that they may be recognized at a great dis-tance, even by inexperienced eyes. Being depositedin water in parallel layers, they have preserved thesame disposition after being left dry.…
Precious stones · Diamonds · Gems
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