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glauconite
[ glaw-kuh-nahyt ]
noun
- a greenish micaceous mineral consisting essentially of a hydrous silicate of potassium, aluminum, and iron and occurring in greensand, clays, etc.
glauconite
/ ˈɡlɔːkəˌnaɪt; ˌɡlɔːkəˈnɪtɪk /
noun
- a green mineral consisting of the hydrated silicate of iron, potassium, aluminium, and magnesium: found in greensand and other similar rocks. Formula: (K,Na,Ca) 0.5-1 (Fe,Al,Mg) 2 (Si,Al) 4 O 10 (OH) 2 .nH 2 O
Derived Forms
- glauconitic, adjective
Other yvlog Forms
- ··Ծ· [glaw-k, uh, -, nit, -ik], adjective
yvlog History and Origins
Origin of glauconite1
yvlog History and Origins
Origin of glauconite1
Example Sentences
Apparently in some manner not understood, the decaying organic matter in the shell of the dead organism initiated or favoured the chemical reactions by which the glauconite was formed.
The term was introduced by the early English geologists for certain sandy rocks which frequently exhibited a greenish colour on account of the presence of minute grains of the green mineral glauconite.
The green colour, on close inspection, is seen to be due to the presence of innumerable small green grains of a mineral called glauconite.
Similar bodies are found in the lower part of the Siluro-Cambrian, in the Quebec group at Point Levis; and there they are filled with a species of glauconite constituting a sort of greensand rock.
It is named from the abundance of grains of green colouring matter, now recognised as glauconite; so that it would be better called Glauconitic Marl.
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