Phlogopite In Marble

Phlogopite is a common form of mica and it is usually distinguished by its brownish red color phlogopite like the other important mica s can come in very large crystal sheets.

Phlogopite in marble. Backlit view also provided to show light transmission. Phlogopite micas are found primarily in igneous rocks although it is also common in contact metamorphic aureoles of intrusive igneous rocks with magnesian country rocks and in marble formed from impure dolomite dolomite with some siliclastic sediment. Cr3 fe3 mn2 nd3. Green pholgopite on marble matrix.

Photos in sw lw uv sw lw and natural light. Petrographically marbles are massive rather than thin layered and consist of a. Small cabinet 7 10 cm sold. Phlogopite is an important and relatively common end member composition of biotite.

Most common fl activator. The 20 mm long phlogopite is nearly tranpsparent down the long axis. Diopside phlogopite in marble. N tio6 cluster other activators.

45 x 30 x 25 mm specimen. Thin sheets can be peeled off as layers and thin layers maintain an interesting metallic looking transparency. Diopside phlogopite in marble. Other subordinate minerals are quartz epidote sulphides ba feldspars baryte and rare phlogopite.

The medium to coarse grained candoglia marble mainly shows a pink colour with frequent dark green layers due to the presence of diopside and tremolite. Mogok township pyin oo lwin district mandalay region myanmar. Fluorescent diopside blue uv sw and phlogopite pale yellow uv sw in marble matrix. High al vein phlogopite retained its al content from the contact metamorphic marble parent phlogopite and only underwent fe mg exchange with the metasomatic fluid.

Commercially it includes all decorative calcium rich rocks that can be polished as well as certain serpentines verd antiques. Marble granular limestone or dolomite i e rock composed of calcium magnesium carbonate that has been recrystallized under the influence of heat pressure and aqueous solutions. Cabinet 10 18 cm sold. This specimen was collected from franklin new jersey and measures 8 6 x 7 1 x 6 4 centimeters in size.

Cleavage steps can be seen on the top of the crystal. Gföhl krems land district lower austria austria. Pe phlogopite 2 30 barns electron u pe phlogopite x r electron 6 46 barns cc. Yellow fluorescence in lw is sphalerite.

Barrel shaped phlogopite crystal and small phlogopite flakes in white marble. All the vein phlogopites studied. Gföhl krems land district lower austria austria.