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ultrabasic
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The answer ULTRABASIC has 1 possible clue(s) in existing crosswords.
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The word ULTRABASIC is VALID in some board games. Check ULTRABASIC in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of ultrabasic in various dictionaries:
Containing magnesium and iron and only a very small amount of silica.
ULTRABASIC - Ultramafic (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low si...
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Possible Crossword Clues |
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Poor in silica? But Clara works to bring in silicon |
Last Seen in these Crosswords & Puzzles |
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Jun 15 2002 The Times - Cryptic |
Ultrabasic description |
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Ultramafic (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content). The Earth's mantle is composed of ultramafic rocks. Ultrabasic is a more inclusive term that includes igneous rocks with low silica content that may not be extremely enriched in Fe and Mg, such as carbonatites and ultrapotassic igneous rocks. |