Petrography Microscopy Granite

Using polarized light microscopy plm and xrd xrf bulk analysis can provide information about bulk composition of a rock for grade and tonnage as well as characterizing the rock system.

Petrography microscopy granite. Finer analysis with sem eds mapping can document the individual minerals in a sample as well as perform analysis on. Geological map of a rare metal pegmatite emplaced in metabasic rock occurring within the 2 5ga ore bearing granite. These are photomicrographs very thin slices of rock seen in plane polarised light or between crossed polarisers when the colours seen are produced by interference of light. It is applicable to aggregates concrete mortar grout plaster stucco terrazzo and similar portland cement mixtures.

A slice of rock was affixed to a microscope slide and then ground so thin that light could be transmitted through mineral grains that otherwise appeared opaque. To the east shan plateau is a. Intruded by a variety of plutonic rocks such as biotite granite syenite leucogranite and minor pegmatite and aplite dikes of eocene to mioceneages. A petrographic microscope is a type of optical microscope used in petrology and optical mineralogy to identify rocks and minerals in thin sections.

Under the microscope the granites exhibit mostly hypidiomorphic granular texture figure 5a and at. Inclusion petrography of metamorphic rock hosted gold deposit at onzon kanbani area central myanmar. The microscope is used in optical mineralogy and petrography a branch of petrology which focuses on detailed descriptions of rocks. Since textural details contribute greatly to knowledge of the sequence of crystallization of the various mineral constituents in a rock petrography progressed into.

Thin section petrography became the standard method of rock study. Petrography and mineralogy the granites are mesocratic to leucocratic and medium to coarse grained. Microscopy petrography one of the most effective methods used to evaluate concrete quality diagnose causes of deterioration and determine extent of damage is petrographic examination. Thin section petrography for ees 330 356 thin section images ductiley sheared granite cordillera darwin southern chile ductile fabrics and kinematic indicators in high temperature ignimbrites shoshone hills and brown s bench ignimbrite succession southern snake river plain idaho.

Optical microscopy using transmitted light. The method is called polarized light microscopy plm. Coal petrography is the study of the organic constituents of sedimentary rocks originally by optical microscopy of thin sections transmitted light or of polished blocks reflected light. 1 biotite is ubiquitously present in sg and totally absent in gg.