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3361 views Andalusite seen in thin section under a petrographic microscope Author: WeSapiens/Geologia Referee: Nicolás Velilla Sánchez
This sheet shows the Andalusite. This mineral is an a polyphenic of silicates of aluminum indicative of conditions of formation of the rock at low pressure.
In this sheet there are excellent examples of crystals of Andalusite with its crystal twinning in cross, where inside the graphite has been developed.
In this case the Andalusite is ... -
1895 views Olivine seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
Texts in preparation
(Sample 811) -
1961 views Olivine seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
Texts in preparation
(Sample 1238) -
1550 views Olivine seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
Texts in preparation
(Shows USB - 43) -
1550 views Serpentinizado olivine seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
Text in drawing
(Sample LZ-100) -
1636 views Olivine vsto in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
Text in drawing
(Displays xy) -
1471 views Brucita seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
This tab shows the Brucita. This Mg hydroxide is interpreted as a
product of the transformation of the periclasa that can be generated in metamorphic rocks
carbonated.
(Sample OS-1) -
1628 views Muscovite seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
This tab shows Moscow at a shale pelÃtico crystals. This mica is very common in this type of rocks for its high content in the, K and H2O mainly promoting the conditions for the formation of this mineral. In addition it
He noted how it is deformed and preferential orientation creates a very strong foliation in the rock. Observese in her sheet ... -
1405 views Muscovite seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
(Sample NV-282) -
1456 views Spinel seen in thin section with petrographic microscope Author: Apliteg Referee: WeSapiens/Geologia
This tab shows various crystals of spinel serpentinizada ultrabásica rock. These minerals are observed with a very intense reddish and isolated grains. One of the optical characteristics more decisive of this mineral is
What are isotropic.
(Shows 2839)