| pumice |
A glassy igneous rock that forms from felsic frothy lava and contains abundant (over 50%) pore space.
출처: www.wwnorton.com/college/geo/earth2/glossary/p.htm
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|---|---|
| pumice |
A volcanic glass full of cavities and very light in weight.
출처: www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2...
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| pumice |
Finely ground volcanic rock to cleanse and slough off dead skin.
출처: www.melangecosmetics.com/ingredients.htm
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| pumice |
Volcanic rock used in a variety of forms in metalsmithing. Pumice rocks are used as an abrasive in creating a mirror finish in holloware. Lump pumice is used as a heat reflective material in annealing trays. Powdered pumice is ground to different grades or grits for use as an abrasive. Powdered pumice is also sometimes used as a component of pitch.
출처: faculty.uwstout.edu/hunts/art415002/glossary.shtml
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| pumice |
A light-colored volcanic rock containing abundant trapped gas bubbles formed by the explosive eruption of magma. Because of its numerous gas bubbles, pumice commonly floats on water.
출처: www.earthscape.org/r1/brs01/brs01h.html
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