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Mayenite Gallery

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Multiple photos availableMayenite : Ca12Al14O33, Calcite : CaCO3

Caspar quarry, Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.), Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany

Tiny drop-like isometric crystals of mayenite in Ca-rich matrix. Black co-existing mineral could be jasmundite or brownmillerite (or eventually magnesioferrite). Recent research (i.e. Boysen et al. 2007) shows, that the structure of the mineral, based on aluminate framework, with 'free oxygen' distributed within in, giving (at high temperatures) ...
 © Ł Kruszewski 08Photo ID: 159981    View Count: 315

Mayenite : Ca12Al14O33

Caspar quarry, Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.), Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany

dimension area mm. 2 x 2

photo and collection Luigi Chiappino
 © luigi chiappinoPhoto ID: 253247    View Count: 18
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