Feldspar (Orthoclase)
KAlSi3O8
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Orthoclase is a potassium feldspar and one of the most common minerals in the Earth's crust. It is an essential component of granite and many other igneous rocks. Moonstone is a gem variety of orthoclase.
| Sistema Cristalino | Monoclinic |
| Classe Mineral | 09 Silicates |
| Dureza Mohs | 6.0-6.5 |
| Gravidade Específica | 2.55-2.63 |
| Cor | White, pink, cream, gray |
| Brilho | Vitreous |
| Traço | White |
| Clivagem | Perfect {001}, good {010} |
| Fratura | Uneven to conchoidal |
| Transparência | Translucent |
| Hábito Cristalino | Prismatic, tabular |
Dureza Mohs
Mohs Hardness: 6,0 – 6,5
1 Soft10 Hard
Sistema Cristalino
MonoclinicFrequently Asked Questions
What is the hardness of Feldspar (Orthoclase)?
Feldspar (Orthoclase) has a Mohs hardness of 6.0-6.5.
What crystal system does Feldspar (Orthoclase) belong to?
Feldspar (Orthoclase) crystallizes in the Monoclinic crystal system.
What color is Feldspar (Orthoclase)?
Feldspar (Orthoclase) is typically White, pink, cream, gray.
What type of luster does Feldspar (Orthoclase) have?
Feldspar (Orthoclase) exhibits a Vitreous luster.
What is the chemical formula of Feldspar (Orthoclase)?
The chemical formula of Feldspar (Orthoclase) is KAlSi3O8.