Fine-grained granite, usually occurring in dikes and containing little mica and a high percentage of silica. BASIC. A term applied to rocks in which the iron-magnesia minerals and feldspars with lime and soda predominate, such as diabase or basalts. Congressional Serial Set - Seite 1801907Vollansicht - Über dieses Buch
| Vermont. State Geologist - 1910 - 576 Seiten
...System of Mineralogy, 6th ed. 1892. ANTICLINE. A term applied to granite sheet or sedimentary l>eds that form an arch. APLITE. Fine-grained granite, usually...containing little mica and a high percentage of silica. BASIC. A term applied to rocks in which the iron-magnesia minerals and feldspars with lime and soda... | |
| Geological Survey (U.S.) - 1911 - 162 Seiten
...including 6 of the rarer ones. For analyses see Dana, ES, System of Mineralogy, 6th ed., 1892, pp. 522-526. ANTICLINE. A term applied to granite sheets or sedimentary...beds that form an arch. APLITE. Fine-grained granite, generally occurring in dikes and containing little mica and a high percentage of silica. BASIC. A term... | |
| Thomas Nelson Dale, Herbert Ernest Gregory - 1911 - 698 Seiten
...certainly has a wide economic extent. GLOSSARY OF SCIENTIFIC AND QUARRY TERMS. ACCESSORY MINERALS in granite are original constituents of the rock, found...only in small, often only in microscopic quantity. ACIDIC. A term applied to rocks in which silicic acid (silica) or quartz predominates. AXLANITE. An... | |
| Oklahoma Geological Survey - 1915 - 124 Seiten
...rt N rt (/l rt (J ^ 09 on J= £ H </i GLOSSARY OF SCIENTIFIC AND QUARRY TERMSACCESSORY MINERALS in granite are original constituents of the rock, found...only in small, often only in microscopic quantity. ANTICLINE. A term applied to granite sheets or sedimentary beds that form an arch. APLITE. Fine-grained... | |
| Charles Henry Taylor - 1915 - 126 Seiten
...EV ? " rs — x §• ll = '5. H£, U GLOSSARY OF SCIENTIFIC AND QUARRY TERMSACCESSORY MINERALS in granite are original constituents of the rock, found...only in small, often only in microscopic quantity. ANTICLINE. A term applied to granite sheets or sedimentary beds that form an arch. APLITE. Fine-grained... | |
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