WebIn those fossilized wood, silica minerals from volcanic ash have replaced the biological material. Minor minerals, such as iron, manganese, both carbon add the rainbow away colors. WebSodium feldspar (NaAlSi 3 O 8) exhibits a lower viscosity than potassium feldspar when melted at a given temperature. This enables vitrification at lower temperatures but carries …

Feldspar has a Mohs hardness of 6. Feldspar - Weegy

WebFeldspar is a tectosilicate with the chemical composition KAlSi 3 O 8 – NaAlSi 3 O 8 – CaAl 2 Si 2 O 8 Physical properties High alumina and alkali content High potassium content Low iron content Chemical inertness pH … WebIt is a color variety of microcline, a potassium-rich member of the feldspar mineral group. Amazonite has a chemical composition of KAlSi 3 O 8 and its green color is thought to be caused by trace amounts of lead. ... hcf of 224 and 196

Mohs scale of mineral hardness - Simple English Wikipedia, the …

WebFeldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and extender in paint, plastics, and rubber. In the US, about 66% of feldspar is consumed in glassmaking, including glass … WebE. quartz, muscovite mica, K- feldspar, Na-plagioclase 9- The most common type of volcanic igneous rock is:A. rhyolite B. basalt C. daciteD. granite E. andesite. 10-The type of chemical bonding thatforms the strongest bonds (e.g. in diamond) is:A. ionic B. van der Waals C. metallicD. covalent E. hydrogen. 11- Which of the following minerals can ... WebApr 25, 2003 · Hardness: 6 on Mohs Hardness Scale; Cleavage: Yes ; Fracture: Conchoidal or brittle ; Plagioclase. Shape: Triclinic (Single prism-shaped crystals are … hcf of 22 33 44