PERLITE a volcanic glass
Crossword Clue

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AnswerCrossword Clue
perlitesPERLITE, a volcanic glass
perliticpertaining to perlite (a volcanic glass)
perlitea volcanic glass
obsidiana volcanic glass
obsidiansOBSIDIAN, a volcanic glass
selvedgesA zone of altered rock, esp. volcanic glass, at the edge of a rock mass
selvagesA zone of altered rock, esp. volcanic glass, at the edge of a rock mass
obsidianvolcanic glass similar in composition to granite, usually dark but transparent in thin pieces, and having a good conchoidal fracture
obsidiansvolcanic glass similar in composition to granite, usually dark but transparent in thin pieces, and having a good conchoidal fracture
perliticvolcanic glass in which concentric fractures impart a distinctive structure resembling masses of small spheroids, used as a plant growth medium
perlitevolcanic glass in which concentric fractures impart a distinctive structure resembling masses of small spheroids, used as a plant growth medium
pearlitevolcanic glass in which concentric fractures impart a distinctive structure resembling masses of small spheroids, used as a plant growth medium
pumicesa volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing