A Summary of Progress in Petrography. in 1887-1896 |
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Page 2
... calcite . The glaucophane is present in elongated prisms , which form a felt around epidote , and are included in the quartz . Mineralogical News . - Morphological and Physical Properties.— The possibility of the selection of half the ...
... calcite . The glaucophane is present in elongated prisms , which form a felt around epidote , and are included in the quartz . Mineralogical News . - Morphological and Physical Properties.— The possibility of the selection of half the ...
Page 9
... calcite . — The same author describes the rocks of the island of Teneriffe as scoriaceous basalts , containing olivine and augite of the first consolidation . The very light color of the latter mineral and its well - marked ...
... calcite . — The same author describes the rocks of the island of Teneriffe as scoriaceous basalts , containing olivine and augite of the first consolidation . The very light color of the latter mineral and its well - marked ...
Page 8
... calcite . — The same author describes the rocks of the island of Teneriffe as scoriaceous basalts , containing olivine and augite of the first consolidation . The very light color of the latter mineral and its well - marked ...
... calcite . — The same author describes the rocks of the island of Teneriffe as scoriaceous basalts , containing olivine and augite of the first consolidation . The very light color of the latter mineral and its well - marked ...
Page
... calcite . It is evidently impossible to mention even all of the important discoveries made by the author in his studies of the wonder- ful suite of specimens collected by him . We can only refer briefly to the most important of them ...
... calcite . It is evidently impossible to mention even all of the important discoveries made by the author in his studies of the wonder- ful suite of specimens collected by him . We can only refer briefly to the most important of them ...
Page 5
... calcite im- bedded in its matrix . Dr. Lawson 13 describes an amygdaloidal trap from the Animikie series of Thunder Bay , Canada , that contains about 2 % of native copper . Mineralogical News . - NEW MINERALS . - Inesite . - At the ...
... calcite im- bedded in its matrix . Dr. Lawson 13 describes an amygdaloidal trap from the Animikie series of Thunder Bay , Canada , that contains about 2 % of native copper . Mineralogical News . - NEW MINERALS . - Inesite . - At the ...
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Common terms and phrases
acute bisectrix Al,O Amer AMERICAN NATURALIST amphibole analysis andesites apatite augite axial ratio basalt biotite bisectrix brown Bull calcite Colby University color colorless composition containing cordierite corresponding described diabase diorites double refraction dykes Edited by Dr epidote eruptive Fe,O feldspar FeO CaO MgO FeO MnO Förh formula gabbro garnet Geol gneiss grains granite green ground-mass H₂O hardness hexagonal hornblende inclusions isomorphous Jour Kryst Lacroix lamellæ lithophysæ lustre magma magnetite MAKERS SYRACUSE manganese mica microlites mineral occurs MINERALOGY AND PETROGRAPHY.¹ molecule monoclinic Na,O Na₂O nepheline Neues Jahrb olivine optical angle optical axes original orthoclase orthorhombic Petrog PETROGRAPHY.¹ Petrographical phenocrysts plagioclase pleochroic porphyritic porphyritic crystals pressure prismatic produced pyroxene quartz regarded resembles rhombohedral rocks scapolite schists silica small crystals specific gravity spherulites structure substance symmetry thin section tion twinning plane variety W. S. Bayley Waterville yellow yielded Zeits
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Page 5 - The olivine is surrounded by a reactionary rim consisting of an inner zone of hypersthene and an outer one of actinolite.