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  1. Dictionary
    talc
    /talk/

    noun

    • 1. talcum powder.
    • 2. a white, grey, or pale green soft mineral with a greasy feel, occurring as translucent masses or laminae and consisting of hydrated magnesium silicate.

    verb

    • 1. powder or treat (something) with talc: "he took two hours to get himself dressed for a date, oiling his black hair and talcing his face"

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  2. en.m.wikipedia.org › wiki › TalcTalc - Wikipedia

    Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula Mg3Si4O10(OH)2. Talc in powdered form, often combined with corn starch, is used as baby powder. This mineral is used as a thickening agent and lubricant. It is an ingredient in ceramics, paints, and roofing material.

  3. www.britannica.com › science › talcTalc | Definition, Uses, & Facts | Britannica

    Oct 17, 2024 · Talc, common silicate mineral that is distinguished from almost all other minerals by its extreme softness. Its soapy or greasy feel accounts for the name soapstone given to compact aggregates of talc and other rock-forming minerals.

  4. geology.com › minerals › talcThe Mineral Talc: Uses, Properties, Photos - Geology.com

    Talc is a hydrous magnesium silicate mineral with a chemical composition of Mg 3 Si 4 O 10 (OH) 2. Although the composition of talc usually stays close to this generalized formula, some substitution occurs.

  5. geologyscience.com › minerals › talcTalc | Properties, Formation, Occurrence and Uses Area

    Aug 25, 2023 · Talc is a naturally occurring mineral known for its softness, smoothness, and ability to absorb moisture. It is a silicate mineral that is composed of magnesium, silicon, and oxygen. Talc has a unique combination of properties that make it useful in a variety of industrial and consumer applications.

  6. www.merriam-webster.com › dictionary › talcTalc Definition & Meaning - Merriam-Webster

    The meaning of TALC is a very soft mineral that is a basic silicate of magnesium, has a soapy feel, and is used especially in making talcum powder.

  7. geossary.com › mineral-talc-properties-characteristics-usesMineral talc: Properties, characteristics and uses - Geossary

    Jan 27, 2023 · Talc is a hydrated magnesium silicate mineral, originating from metamorphic rocks (pyroxenites), ultramafic rocks (peridotites), and from dolomitic marbles, where it is formed by hydrothermal replacement of magnesium-rich materials.

  8. www.collinsdictionary.com › dictionary › englishTALC definition and meaning | Collins English Dictionary

    a colourless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities), found in certain igneous rocks (esp the kimberlites of South Africa). It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon.

  9. www.vocabulary.com › dictionary › talcTalc - Definition, Meaning & Synonyms - Vocabulary.com

    Definitions of talc. noun. a fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder. synonyms: talcum. see more.

  10. library.fiveable.me › key-terms › mineralogyTalc - (Mineralogy) - Vocab, Definition, Explanations - Fiveable

    Definition. Talc is a soft mineral composed primarily of magnesium, silicon, and oxygen, often found in metamorphic rocks. Due to its unique properties, such as softness and hydrophobicity, talc is widely used in various industrial applications, including cosmetics, plastics, and paper production.

  11. www.usgs.gov › publications › definition-talcDEFINITION FOR TALC. | U.S. Geological Survey - USGS.gov

    DEFINITION FOR TALC. January 1, 1984. Talc is a naturally occurring single-phase mineral having the approximate chemical formula Mg//3Si//4O//1//0 (OH)//2 and a specific type of crystal structure.