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Ferrihollandite, Ba(Mn++++6Fe+++2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. 5 mm prismatic xls. Type A occurrence. Copyright: © Cristian B.

Ferrihollandite, Ba(Mn++++6Fe+++2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. 5 mm prismatic xls. Type A occurrence. Copyright: © Cristian B.

Todorokite, (Na,Ca,K)2(Mn++++,Mn+++)6O12•3-4.5(H2O), Punta del Aguila, Playa Blanca, Yaiza, Lanzarote, Las Palmas Province, Canary Islands, Spain. Fov ca. 8 mm. Copyright: © Volker Betz

Todorokite, (Na,Ca,K)2(Mn++++,Mn+++)6O12•3-4.5(H2O), Punta del Aguila, Playa Blanca, Yaiza, Lanzarote, Las Palmas Province, Canary Islands, Spain. Fov ca. 8 mm. Copyright: © Volker Betz

Mannardite var. Ankangite avec Zinkenite aciculaire Miniera di Monte Arsiccio, Stazzema, Apuanische Alpen, Lucca, Toskana (Toscana), Italien Taille=0.67 mm Copyright Matteo Chinellato

Mannardite var. Ankangite avec Zinkenite aciculaire Miniera di Monte Arsiccio, Stazzema, Apuanische Alpen, Lucca, Toskana (Toscana), Italien Taille=0.67 mm Copyright Matteo Chinellato

Ferrihollandite, Ba(Mn4+6Fe3+2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. IMA 2012 s.p. Copyright © Cristian Biagioni

Ferrihollandite, Ba(Mn4+6Fe3+2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. IMA 2012 s.p. Copyright © Cristian Biagioni

Ferrihollandite, Ba(Mn++++6Fe+++2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. Fov 8.5 mm. Largest crystal size: 3 mm. Tabular crystals, black, shiny, of ferrihollandite, on quartz. Collection/Photo of Gianfranco Ciccolini

Ferrihollandite, Ba(Mn++++6Fe+++2)O16, Castagnola, Vagli di Sotto, Apuan Alps, Lucca Province, Tuscany, Italy. Fov 8.5 mm. Largest crystal size: 3 mm. Tabular crystals, black, shiny, of ferrihollandite, on quartz. Collection/Photo of Gianfranco Ciccolini

CKryptomelane Bel Air Mine, La Chapelle Largeau, Deux-Sèvres, Département, Poitou-Charentes, Region, Frankreich Taille=4 mm Copyright Jean-Marc Johannet

CKryptomelane Bel Air Mine, La Chapelle Largeau, Deux-Sèvres, Département, Poitou-Charentes, Region, Frankreich Taille=4 mm Copyright Jean-Marc Johannet

Hydrokenoelsmoreite, ◻2W2O6(H2O), Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany. Copyright © Stephan Wolfsried 9/2009. IMA 2010 s.p.

Hydrokenoelsmoreite, ◻2W2O6(H2O), Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany. Copyright © Stephan Wolfsried 9/2009. IMA 2010 s.p.

Manganosite, MnO, Nordmark, Sweden. The surface is weathering cortex, perhaps pyrochrome of the otherwise emerald green mineral. Fov 3 mm. Collection/Copyright: Reinhold

Manganosite, MnO, Nordmark, Sweden. The surface is weathering cortex, perhaps pyrochrome of the otherwise emerald green mineral. Fov 3 mm. Collection/Copyright: Reinhold

Ranciéite, (Ca,Mn++)Mn++++4O9•3(H2O) , Calcite,  Escaro, Pyrénées-Orientales, Occitanie, France. Fov 2 cm. Photo and collection Christian Berbain

Ranciéite, (Ca,Mn++)Mn++++4O9•3(H2O) , Calcite, Escaro, Pyrénées-Orientales, Occitanie, France. Fov 2 cm. Photo and collection Christian Berbain

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