Breunnerite - (Fe bearing Magnesite)
Muhlebach, Ernen, Goms
Wallis, Switzerland
4.3 x 3 x 2.1 CM (miniature)
price: $220
Pre Tucson
Something quite unusual. Breunnerite is a variety of Magnesite that was for almost 2 centuries considered to be an accepted mineral specie. This is now classified as a Magnesite variety but with a high Iron ratio and Mg dominant. No matter the classification, these are huge crystals for this variety, up to 2.8 CM and these contrast well with the greenish Talc matrix. The best of this material is found in European Alpine regions, as was this specimen. The crystals also show zoning and look much more like Siderite than Magnesite, and are partially translucent. Not often seen at all in the mineral market here, this is an especially well-crystallized specimen.
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Breunnerite - (Fe bearing Magnesite)
Muhlebach, Ernen, Goms
Wallis, Switzerland
4.3 x 3 x 2.1 CM (miniature)
price: $220
Pre Tucson
Something quite unusual. Breunnerite is a variety of Magnesite that was for almost 2 centuries considered to be an accepted mineral specie. This is now classified as a Magnesite variety but with a high Iron ratio and Mg dominant. No matter the classification, these are huge crystals for this variety, up to 2.8 CM and these contrast well with the greenish Talc matrix. The best of this material is found in European Alpine regions, as was this specimen. The crystals also show zoning and look much more like Siderite than Magnesite, and are partially translucent. Not often seen at all in the mineral market here, this is an especially well-crystallized specimen.
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