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Trachyandesite

【Introduction】

Trachyandesite is a volcanic rock that is equivalent to the composition of the monzonite and between the andesite and the trachyte. Mostly white, gray, light yellow or red, often with plaque and rough surface structure, stomatal block structure.

【Label】

Trachyandesite,andesite
      Trachyandesite is a volcanic rock that is equivalent to the composition of the monzonite and between the andesite and the trachyte. Mostly white, gray, light yellow or red, often with plaque and rough surface structure, stomatal block structure.
 
      Under the action of hydrothermal fluid, the coarse-faced andesite often occurs in the shale, the rocks turn green and gray-green, and the original rock minerals become albite, actinolite, chlorite, zoisite, calcite, sericite. , pyrite, can also occur secondary quartz lithification, kaolin petrochemical, petrochemical and other alterations.
 
andesite
 
      Rough-faced andesite is a product of volcanic eruptions during tectonic movement from activity to stability, and is common in late orogenic periods or relatively stable structures. Its magma is mainly derived from the upper mantle affected by deep faults. The coarse-faced andesite is symbiotic with basalt, andesite, rhyolite, or with alkaline basalt, coarse porphyry, and porphyrite. The occurrence is dominated by central eruptions, mostly interbedded with lava and volcanic clastic rocks. output.

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