Cummingtonite definitions
| Word backwards | etinotgnimmuc |
|---|---|
| Part of speech | Noun |
| Syllabic division | cum-ming-ton-ite |
| Plural | The plural form of the word "cummingtonite" is cummingtonites. |
| Total letters | 13 |
| Vogais (4) | u,i,o,e |
| Consonants (5) | c,m,n,g,t |
Cummingtonite is a mineral that belongs to the amphibole group, which is a class of inosilicate minerals. It is named after the town of Cummington, Massachusetts, where it was first discovered. Cummingtonite is typically found in metamorphic rocks like gneiss and schist, and sometimes in igneous rocks.
Physical Properties
Cummingtonite has a dark green to black color and a prismatic crystal habit. It has a Mohs hardness of 5-6, making it relatively hard. The mineral has perfect cleavage in two directions and a brittle tenacity. It is classified as an amphibole mineral due to its chain silicate structure.
Chemical Composition
The chemical formula of cummingtonite is Mg7Si8O22(OH)2. This composition places it in the magnesium-iron-manganese amphibole group. The mineral may also contain traces of other elements like aluminum, calcium, and sodium.
Occurrences
Cummingtonite is commonly found in metamorphic environments, especially in regions where high-temperature and high-pressure conditions prevail. It can occur in various types of rocks like marble, schist, and hornfels. The mineral often forms as a result of the metamorphism of magnesium-rich rocks.
Uses
Due to its fibrous nature and high tensile strength, cummingtonite has been used as a reinforcing agent in materials like concrete. However, it is essential to handle this mineral with care due to its asbestos-like properties. Cummingtonite is not used as extensively as other minerals due to its potential health risks.
In conclusion, cummingtonite is a significant mineral in the amphibole group, with distinct physical and chemical properties. Its presence in metamorphic rocks adds to the diversity of minerals found in the Earth's crust.
Cummingtonite Examples
- The geologist identified cummingtonite in the rock sample.
- The mineral cummingtonite has a dark green color.
- Cummingtonite is commonly found in metamorphic rocks.
- The presence of cummingtonite indicates a specific geological process.
- Scientists use cummingtonite to study the formation of certain rocks.
- Miners discovered a new vein rich in cummingtonite deposits.
- The properties of cummingtonite make it useful for mineral identification.
- Researchers are studying the unique crystal structure of cummingtonite.
- Cummingtonite is sometimes mistaken for other minerals with similar properties.
- The high concentration of cummingtonite in the soil affects plant growth.