Can you eat feldspar?
Most of the products we use on a daily basis are made with feldspar: glass for drinking, glass for protection, fiberglass for insulation, the floor tiles and shower basins in our bathrooms, and the tableware from which we eat. Feldspar is part of our daily life.
Where can potassium feldspar be found?
The alkali feldspars are primarily important as constituents of rocks; they are very widespread and abundant in alkali and acidic igneous rocks (particularly syenites, granites, and granodiorites), in pegmatites, and in gneisses.
What is the hardness of microcline?
6-6.5
| Microcline | |
|---|---|
| Mohs scale hardness | 6-6.5 |
| Luster | Vitreous |
| Streak | White |
| Diaphaneity | Transparent, translucent |
How do you identify anorthite?
Anorthite is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is CaAl2Si2O8. Anorthite is found in mafic igneous rocks. Anorthite is rare on the Earth but abundant on the Moon….
| Anorthite | |
|---|---|
| 2V angle | 78° to 83° |
| Melting point | 1553 °C |
| References |
How anorthite is formed?
Unsworth, Barratt, Park and Titchener (12), studied boiler deposits in pulverised coal fired furnaces using X-ray diffraction and scanning electron microscopy techniques and demonstrated that anorthite is formed by solid state reactions via gehlenite (Ca2 Al2 Si2O7) as an intermediate rather than by crystallisation …
What is Microclines hardness?
About MicroclineHide White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green. Lustre: Vitreous. Hardness: 6 – 6½
How do you identify orthoclase in the field?
Orthoclase often displays Carlsbad twinning and light is reflected differently by the crystal faces of the two intergrown crystals. Luster is vitreous to pearly.