Mineralape
Corundum
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Corundum

Al2O3
Trigonal root IMA grandfathered

Corundum is a naturally occurring mineral with the chemical formula aluminum oxide (Al2O3). It crystallizes in the trigonal crystal system and is known for its exceptional hardness, ranking 9 on the Mohs scale. The mineral has a white streak and exhibits a conchoidal fracture. Corundum has a high density and displays a vitreous to adamantine luster. It is classified as a native oxide in the Strunz classification (4.CB.05) and as an oxide mineral in the Dana classification (4.3.1.1). Corundum is a key mineral in the production of industrial abrasives and is also the primary mineral in the formation of gemstones such as ruby and sapphire.

Durezza Mohs9 (graffia il vetro)
1. Talco
2. Gesso
3. Calcite
4. Fluorite
5. Apatite
6. Ortoclasio
7. Quarzo
8. Topazio
9. Corindone
10. Diamante
135710
Più duro di topazio (8)

Composition

Composizione (% in peso)
Al
O
  • AlAluminium52.9%
  • OOxygen47.1%

Overview

Corundum is a naturally occurring mineral with the chemical formula aluminum oxide (Al2O3). It crystallizes in the trigonal crystal system and is known for its exceptional hardness, ranking 9 on the Mohs scale. The mineral has a white streak and exhibits a conchoidal fracture. Corundum has a high density and displays a vitreous to adamantine luster. It is classified as a native oxide in the Strunz classification (4.CB.05) and as an oxide mineral in the Dana classification (4.3.1.1). Corundum is a key mineral in the production of industrial abrasives and is also the primary mineral in the formation of gemstones such as ruby and sapphire.

Etymology

Corundum is named after ruby, a red variety of the mineral. The name is derived from the Sanskrit word 'kuruvinda,' which was later adapted into the Persian word 'corundum' to describe the gemstone.

Geological genesis

Corundum is typically formed in metamorphic and igneous environments. It is commonly associated with high-pressure and high-temperature geological conditions, often occurring in igneous rocks such as syenite and in metamorphic rocks like marbles and schists.

Spiritual meaning and crystal therapy

Spiritual meaning

Corundum is traditionally associated with strength, courage, and inner clarity. It symbolizes resilience and the ability to overcome challenges with grace and determination.

Esoteric properties

Corundum is said to enhance willpower, protect against negative energies, and promote a sense of grounding and stability. It is believed to support spiritual growth and emotional balance.

Associated chakra

Corundum is traditionally associated with the root chakra due to its grounding and stabilizing properties. Its deep colors are believed to help anchor energy and foster a strong connection to the earth.

Crystal therapy use

In crystal therapy, corundum is often placed at the feet or carried as a talisman to support grounding and protection. It can be worn as jewelry or used during meditation to enhance focus and inner strength.

Information on crystal therapy is provided for cultural and traditional purposes only. It does not replace medical advice or treatment. Always consult a doctor for health issues.