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Johannsenite [1] | |
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General | |
Category | Mineral |
Formula (repeating unit) | CaMn2+Si2O6 |
IMA symbol | Jhn [2] |
Crystal system | Monoclinic |
Identification | |
Color | blue-green, grey-white, dark brown, colourless |
Mohs scale hardness | 6 |
Streak | white |
Johannsenite is a silicate mineral that is a member of the pyroxene family. The mineral can be produced in limestone or due a metamorphic process. [3] The mineral is also associated with Pb-Zn mineralization. [4]
It is a relatively rare material. [5] but is said to be abundant in the Aravaipa region of Arizona. [6] It is commonly found as a spherulite like aggregate. [7]
The mineral is vulnerable to oxidation, hydration, and carbonation. It is also commonly altered to rhodonite. [8]
The mineral was named in 1932 after Albert Johannsen. [9]
It can be found in countries like Mexico, Italy, Australia, [5] the United States, Australia, and Japan. [3]
Johannsenite can be found in limestone affected by the element magnesium during metamorphosis. It is also found in veins. [5]
![]() | You can help expand this article with text translated from
the corresponding article in German. Click [show] for important translation instructions.
|
Johannsenite [1] | |
---|---|
![]() | |
General | |
Category | Mineral |
Formula (repeating unit) | CaMn2+Si2O6 |
IMA symbol | Jhn [2] |
Crystal system | Monoclinic |
Identification | |
Color | blue-green, grey-white, dark brown, colourless |
Mohs scale hardness | 6 |
Streak | white |
Johannsenite is a silicate mineral that is a member of the pyroxene family. The mineral can be produced in limestone or due a metamorphic process. [3] The mineral is also associated with Pb-Zn mineralization. [4]
It is a relatively rare material. [5] but is said to be abundant in the Aravaipa region of Arizona. [6] It is commonly found as a spherulite like aggregate. [7]
The mineral is vulnerable to oxidation, hydration, and carbonation. It is also commonly altered to rhodonite. [8]
The mineral was named in 1932 after Albert Johannsen. [9]
It can be found in countries like Mexico, Italy, Australia, [5] the United States, Australia, and Japan. [3]
Johannsenite can be found in limestone affected by the element magnesium during metamorphosis. It is also found in veins. [5]