pegmatite

How To Use pegmatite In A Sentence

• Acicular crystals and crystal aggregates of pyrolusite are found in vugs in the pegmatites of the district.
• Apatite is the most common phosphate mineral found in granitic pegmatites.
• Nb-dominant kupletskite and, similarly, Zr-rich astrophyllite in the altered pegmatites are thought to be extremely late-stage phases, the result of remobilization of Nb and Zr by postmagmatic deuteric fluids.
• In graphic granite and in pegmatites, perthite is of common occurrence.
• A fellow that he knows showed us a bucketful of aquamarines and two large garnets and then took us for a short walk to the pegmatites on his farm.
• The latter do not include typical pegmatite minerals and appear mainly along the tectonic fractures present at this locality.
• They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, albite, muscovite, fluorite, and cassiterite.
• The dark green color of the emerald required chromium, an element not normally found in granitic pegmatites but often in good supply in ultramafics.
• He went up and took a look at the cliff and rock chimneys above the pegmatites, but he didn't like heights.
• They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, albite, muscovite, fluorite, and cassiterite.