ericssonite
Sign in to saveAlso known as IMA1966-013
thumb Ericssonite has a general formula of BaMn2FeO[Si2O7](OH). It was discovered in 1967 and named after John Ericsson (July 31, 1803 – March 8, 1889), a well known Swedish American inventor, engineer and designer of the iron-clad ship USS Monitor. Ericssonite was discovered in the Jakobsberg Mine in Värmland, Sweden.
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- Ericssonite, Ericssonite-2O, Schefferite, Rhodonite.png
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- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.BE.25
- Nickel-Strunz 9th edition (updated 2009)
- 9.BE.25
- IMA Mineral Symbol
- Ers
- Strunz 8th edition (series ID, updated)
- VIII/B.10
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- Ericssonite
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thumb Ericssonite has a general formula of BaMn2FeO[Si2O7](OH). It was discovered in 1967 and named after John Ericsson (July 31, 1803 – March 8, 1889), a well known Swedish American inventor, engineer and designer of the iron-clad ship USS Monitor. Ericssonite was discovered in the Jakobsberg Mine in Värmland, Sweden.
Ericcsonite is monoclinic; this means it contains three unequal vectors, two of these vector angles are perpendicular while the other is at an angle greater than 90°. Optically ericssonite is anisotropic which means that the mineral has more than one index of refraction, causing light to vary in speed depending on which axis it is traveling through. Since ericssonite is monoclinic, containing three unequal vectors, it has three indices of refraction. Ericssonite is usually a deep reddish-black in color.