Rarely these spherulites are hollow or consist of concentric shells with spaces between ( lithophysae ).
2.
It also commonly occurs in lithophysae.
3.
Typical glasses, notably formation of spherulites, of perlite, lithophysae, and low-temperature prehnite-pumpellyite facies sub-seafloor alteration is ubiquitous though often overprinted by later metamorphic events.
4.
Lithophysae are one of the many forms of silica ( SiO2 ), as quartz, agate, opal, chalcedony, etc . They can have an average diameter, with a maximum of . " Lithophysae " are also related to the spherulites found in obsidians at Lipari, in Yellowstone Park and other places.
5.
Lithophysae are one of the many forms of silica ( SiO2 ), as quartz, agate, opal, chalcedony, etc . They can have an average diameter, with a maximum of . " Lithophysae " are also related to the spherulites found in obsidians at Lipari, in Yellowstone Park and other places.
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