Amygdule

Amygdule

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Amygdules or amygdales form when the gas bubbles or vesicles in volcanic lava are infilled with a secondary mineral such as calcite, quartz, chlorite or one of the zeolites. Amygdules usually form after the rock has been emplaced, and are often associated with low-temperature alteration. Amygdules may often be concentrically zoned. Rocks containing amygdules can be described as amygdaloidal. The word is derived from the Latin and Greek words for almond, reflecting the typical shape of an infilled vesicle. "Amygdule" is more common in US usage, while "amygdale" is more common in British usage.show more

Product details

  • Paperback | 88 pages
  • 152 x 229 x 5mm | 141g
  • Fer Publishing
  • United States
  • English
  • 6135840274
  • 9786135840278