amygdaloidal मीनिंग इन हिंदी

अधिक: आगे

Generally plutonic and volcanic rocks are not greatly affected by zeolite facies metamorphism, although amygdaloidal texture.
The first six years of mining exploited the fissure deposits, then gave way to the amygdaloidal deposits.
Thomsonite occurs with other zeolites in the amygdaloidal cavities of basaltic volcanic rocks, and occasionally in granitic pegmatites.
As the lava solidified, gas trapped within the flows formed an amygdaloidal texture ( literally, rock filled with small vesicles ).
Heulandite occurs with stilbite and other zeolites in the amygdaloidal cavities of basaltic volcanic rocks, and occasionally in gneiss and hydrothermal veins.
A related texture is amygdaloidal in which the volcanic rock, usually basalt or andesite, has cavities, or vesicles, that are filled with secondary minerals, such as zeolites, calcite, quartz, or chalcedony.
At this time they were exposed only to atmospheric pressure, and the steam and other gases, which they contained in great quantity were free to escape; many important modifications arise from this, the most striking being the frequent presence of numerous steam cavities ( amygdaloidal structure ).
Technical jargon in this article that is neither linked nor explained include the following words : tholeiitic, intercalacted, aeolian, amygdaloidal, porphyritic, plagioclase, augite, magnetite, ilmenite, amygdales, quartz, chalcedony, calcite, zeolite, stilbite, mesolite, laumontite, and so on.

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