Densidad ng talc: katangian, uri, at talahanayan

Ang talc ay hydrated magnesium silicate na Mg3Si4O10(OH)2. Nabubuo sa metamorphic alteration ng magnesian silicate gaya ng olivine, amphibole, mica, serpentine, chlorite, at pyroxene, at sa rock na kaugnay ng dolomite at hydrothermal solution. Tinatawag din itong steatite o soapstone.

Talahanayan ng densidad

Laboratoryo ang sumusukat sa eksaktong densidad; 2.7 g/cm³ ang average.

Mga katangian

Light green sa coarse platy occurrence, minsan brown o yellow-white. Maaari ring colorless o dark green at brown kapag marumi. Nakasalalay ang kulay sa impurity at iron hydroxide. Translucent o transparent ang thin plate at iron-free light type.

Pearly to glassy ang cleavage luster; shimmering at dull sa dense mass. Greasy sa hawak, perfect ang cleavage, at bahagyang mas elastic ang flake kaysa pyrophyllite. Inert sa alkali at acid.

Pinakamababa ang Mohs hardness at madaling putulin.

Mga uri

• Minnesotaite—50–80% iron;
• Willemseite—mataas ang nickel;
• Steatite o soapstone—dense at massive;
• Agalite—fine fiber;
• Noble talc—light at transparent.

Mga gamit

Pangunahing refractory at acid-resistant material ito. Ginagamit sa:

• paper industry;
• leather industry;
• textile at cotton whitening;
• rubber filler at dusting;
• cosmetic powder, paste, at ointment;
• refractory at lightfast paint;
• food industry;
• medical talc powder;
• electronics;
• jewelry decoration at electrical insulation.