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Definisi 'glauconite'
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English to English noun
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a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand |  | source: wordnet30
| 2 |
The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand. | | source: webster1913
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