Bulletin . MICROCLINE AND ALBITE IN NATURAL DESCRIPTION SEE ACCOMPANYING TEXT. BULLETIN 92 PLATE. ANDESINE, MICROCLINE, AND ALBITE IN NATURAL DESCRIPTION SEE ACCOMPANYING TEXT. MINERALS ASSOCIATED WITH FELDSPAR IN PEGMATITE. 25 MINERALS ASSOCIATED WITH FELDSPAR IN PEGMATITE. A knowledge of the minerals associated with feldspar in pegmatiteis essential if a proper estimation of the value of the dike materialis to be arrived at. The chief minerals associated with the feldspar in pegmatite arequartz, muscovite (white mica), biotite (black mica), garnets, beryl,tourmaline, ma
Bulletin . MICROCLINE AND ALBITE IN NATURAL DESCRIPTION SEE ACCOMPANYING TEXT. BULLETIN 92 PLATE. ANDESINE, MICROCLINE, AND ALBITE IN NATURAL DESCRIPTION SEE ACCOMPANYING TEXT. MINERALS ASSOCIATED WITH FELDSPAR IN PEGMATITE. 25 MINERALS ASSOCIATED WITH FELDSPAR IN PEGMATITE. A knowledge of the minerals associated with feldspar in pegmatiteis essential if a proper estimation of the value of the dike materialis to be arrived at. The chief minerals associated with the feldspar in pegmatite arequartz, muscovite (white mica), biotite (black mica), garnets, beryl,tourmaline, magnetite. Although pegmatites are essentially coarsely crystalline mixturesof feldspars and quartz, the associated minerals other than quartzare important as their amount and the mode of their occurrencehave a vital influence on the industrial value of the pegmatite. QUARTZ. Quartz is an essential mineral of pegmatite and may be eithermixed with the feldspar or intercrystallized with it as graphic granite;most pegmatite dikes also contain intruded lenses or bands of quartzthat differ in texture and appea
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
