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the claim

Quartzite is primarily composed of quartz crystals.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

AS REPORTEDno primary record reached; this is what the reporting says

Is it true that Quartzite is primarily composed of quartz crystals?

Yes. Quartzite is a metamorphic rock formed from quartz-rich sandstone, leaving it primarily composed of interlocking quartz crystals.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

How claims like this are judged

Judged against reference works: claims of this kind are settled by reference works, not journal abstracts.

Evidence for · 4
Wikipedia: Quartzite
Reference article covering this claim directly
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Wikipedia: Quartzite. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Quartzite

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More for · 3
Agency for Toxic Substances and Disease Registry (US): CHEMICAL AND PHYSICAL INFORMATION - Toxicological Profile for Silica
Lists quartzite as a form of crystalline silica (SiO2), which is quartz.
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Agency for Toxic Substances and Disease Registry (US): CHEMICAL AND PHYSICAL INFORMATION - Toxicological Profile for Silica. (n.d.). Agency for Toxic Substances and Disease Registry (US). https://www.ncbi.nlm.nih.gov/books/NBK592827/#ch4

LibreTexts: LibreTexts: 6.02: Metamorphic Textures
Notes that quartzite is formed from quartz sandstone where quartz grains are enlarged and interlocked.
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LibreTexts: LibreTexts: 6.02%3A Metamorphic Textures. (n.d.). LibreTexts. https://geo.libretexts.org/Courses/Fullerton_College/Introduction_to_Earth_Science_(Ikeda)/06%3A_Metamorphic_Rocks/6.02%3A_Metamorphic_Textures

Wikibooks: Wikibooks: Planet Earth/6g. Common Rock Identification
States quartzite results from quartz-rich sandstone fusing into a framework of highly recrystallized quartz.
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Wikibooks: Wikibooks: Planet Earth/6g. Common Rock Identification. (n.d.). Wikibooks. https://en.wikibooks.org/wiki/Planet_Earth/6g._Common_Rock_Identification

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