siliceous rock

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It [Muscida] has about three times the mass of the Sun and radiates 138 times the Sun’s luminosity from its outer atmosphere at an effective temperature of 5,282 K, giving it the yellowish hue of a G-type star.

sedimentary rock of

silica

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sedimentary rock

Wikipedia

Siliceous rock (Wikipedia) Siliceous rocks are sedimentary rocks that have silica (SiO2) as the principal constituent. The most common siliceous rock is chert; other types include diatomite. They commonly form from silica-secreting organisms such as radiolarians, diatoms, or some types of sponges.