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Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula Mg 3 Si 4 O 10 (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.
Chemically, talc is a hydrous magnesium silicate with a chemical formula of Mg 3 Si 4 O 10 (OH) 2. Talc has many uses in cosmetics and other personal care products.
Talc is a mineral made up mainly of magnesium, silicon, and oxygen. As a powder, it absorbs moisture well and helps cut down on friction, making it useful for keeping skin dry and helping prevent rashes.
Talc is a mineral that is most often found in the metamorphic rocks of convergent plate boundaries. It forms from at least two processes. Most large talc deposits in the United States formed when heated waters, carrying dissolved magnesium and silica, reacted with dolomitic marbles.
滑石（英語： Talc或talcum ）是一种粘土矿物，化学式为Mg 3 Si 4 O 10 (OH) 2 。滑石粉通常与玉米淀粉结合，用作婴儿爽身粉。这种矿物用作增稠剂和润滑剂。它是陶瓷、油漆和屋顶材料中的一种成分。它是许多化妆品的主要成分。 [5]
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. Dense aggregates of high-purity talc are called steatite.
滑石 （英語： Talc或talcum）是一種 粘土礦物，化學式為Mg 3 Si 4 O 10 (OH) 2。. 滑石粉通常與 玉米澱粉 結合，用作 嬰兒爽身粉。. 這種礦物用作 增稠劑 和 潤滑劑。. 它是 陶瓷 、 油漆 和屋頂材料中的一種成分。. 它是許多 化妝品 的主要成分。. [5] 基於劃痕硬度 ...
Talc is known for being the softest mineral on earth. It is number 1 on the Mohs hardness scale, and can be easily scratched by a fingernail. Talc is not commonly seen in collections, as it is usually uninteresting and fairly common, although a few deeply colored and crystallized examples are known and well sought after.
The term talc refers both to the pure mineral and a wide variety of soft, talc-containing rocks that are mined and utilized for a variety of applications. Talc forms mica-like flakes. Talc is the softest mineral on the Mohs hardness scale at 1 and can be easily cut and crushed.
Talc Crystallography. Axial Ratios: a:b:c =0.5778:1:2.0668. Cell Dimensions: a = 5.27, b = 9.12, c = 18.85, Z = 4; beta = 100.016° V = 892.17 Den (Calc)= 2.82. Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c. X Ray Diffraction: