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What has the author Robert W Charles written?
Robert W Charles has written: 'Amphiboles on the join pargasite-ferropargasite' -- subject(s): Amphiboles
How do the crystal structures of pyroxenes and amphiboles differ frome each other?
Pyroxenes have a single chain structure, while amphiboles have a double chain structure. Pyroxenes typically have a simpler, more elongated crystal structure compared to the more complex, ribbony structure of amphiboles. Additionally, pyroxenes commonly have a monoclinic or orthorhombic crystal system, while amphiboles have a monoclinic system.
What are 3 different types of minerals?
Feldspars Piroxenes Amphiboles
Hornblende and the other amphiboles have what type of silicate structure?
Hornblende and other amphiboles have a double chain silicate structure, where silicon-oxygen tetrahedra are connected in double chains linked by other cations like aluminum, magnesium, and iron ions. This structure gives amphiboles their distinct prismatic shape and cleavage properties.
Why is an amphibole a more complex structure than a pyroxene?
Amphiboles have a more complex structure than pyroxenes because they contain additional layers of oxygen and hydroxyl groups. This leads to a greater variety of chemical compositions and structural arrangements within amphiboles compared to pyroxenes. Additionally, amphiboles often exhibit more pronounced cleavage planes and a wider range of physical properties due to their more intricate structure.
What is the chemical composition of amphibole?
Amphiboles are minerals containing mostly silicon, oxygen, iron, and magnesium.
What has the author Robert L Virta written?
Robert L. Virta has written: 'The phase relationship of talc and amphiboles in a fibrous talc sample' -- subject(s): Amphiboles, Phase rule and equilibrium, Talc 'The talc industry--an overview' -- subject(s): Talc, Talc industry
Minerals of this family tend to form long needlelike crystals?
The mineral family that tends to form long needlelike crystals is the amphibole group. Examples of minerals in this group include hornblende and tremolite. These minerals are silicate minerals with a double chain structure, which contributes to their characteristic needlelike crystal habit.
How do minerals form from solution how do they form from magma?
Minerals form as hot magma cools inside the crust, or as lava hardens on the surface. When these liquids cool to a solid state, they form crystals. When elements and compounds that are dissolved in water leave a solution, crystallization occurs.
What is the group name of asbestos?
Chrysotile asbestos (White) is a Serpentine, Amosite (Grunerite) (Brown asbestos, and Crocidolite (Blue) are Amphiboles
The main component of most rocks on the earth's surface?
Quartz and the Feldspar are very common. Other common silicates would be the mica group, even pyroxenes and the amphiboles.
Does amphibole have cleavage?
Yes, amphiboles typically exhibit two directions of cleavage at approximately 56 and 124 degrees. Cleavage refers to the tendency of a mineral to break along certain planes due to its internal structure.
