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Revdite, Na16Si16O27(OH)26 · 28H2O, Karnasurt Mount, Lovozero Massif, Kola, Russian Federation. White massive aggregate with some thermonatrite

Revdite, Na16Si16O27(OH)26 · 28H2O, Karnasurt Mount, Lovozero Massif, Kola, Russian Federation. White massive aggregate with some thermonatrite

Greenalite. La Unión, Sierra de Cartagena, Murcia, Espagne Photo © Dott. Geol. Marco Barsanti

Greenalite. La Unión, Sierra de Cartagena, Murcia, Espagne Photo © Dott. Geol. Marco Barsanti

Bussyite-(Ce), (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. Copyright © 2010 Jason B. Smith

Bussyite-(Ce), (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. Copyright © 2010 Jason B. Smith

Yakovenkuchite-(Y), K3NaCaY2(Si12O30)·4H2O, Mt. Kukisvumchorr (Khibiny Massif), Russia. Druse of yakovenchukite-(Y) crystals in a void within sodalite-aegirine-microcline veinlet in ijoliteurtite. Fov 3.0 x 2.4 mm. Copyright: © American Mineralogist

Yakovenkuchite-(Y), K3NaCaY2(Si12O30)·4H2O, Mt. Kukisvumchorr (Khibiny Massif), Russia. Druse of yakovenchukite-(Y) crystals in a void within sodalite-aegirine-microcline veinlet in ijoliteurtite. Fov 3.0 x 2.4 mm. Copyright: © American Mineralogist

Meieranite, Na2Sr3MgSi6O17, Wessels mine, Kalahari Manganese Fields, Northern Cape Province, South Africa. Aggregates of granular blue crystals, associated with massive pale green sugilite, prismatic grey aegirine and bladed white pectolite.

Meieranite, Na2Sr3MgSi6O17, Wessels mine, Kalahari Manganese Fields, Northern Cape Province, South Africa. Aggregates of granular blue crystals, associated with massive pale green sugilite, prismatic grey aegirine and bladed white pectolite.

Pecoraite, Ni3Si2O5(OH)4 , Culver Baer Mine, Sonoma County, California, USA. Coverage of green aggregates, probably pseudomorph, on matrix, associated with some red cinnabar

Pecoraite, Ni3Si2O5(OH)4 , Culver Baer Mine, Sonoma County, California, USA. Coverage of green aggregates, probably pseudomorph, on matrix, associated with some red cinnabar

Tamaite, (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O, Molinello Mine, Genova, Liguria, Italia. Fov 2 mm. Copyright: 	Luigi Chiappino

Tamaite, (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O, Molinello Mine, Genova, Liguria, Italia. Fov 2 mm. Copyright: Luigi Chiappino

Natrolemoynite, Na4Zr2Si10O26•9H2O, Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. Fov 4mm

Natrolemoynite, Na4Zr2Si10O26•9H2O, Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. Fov 4mm

Kalifersite, (K,Na)5Fe+++7Si20O50(OH)6•12(H2O), Rasvumtchorr, Khibiny, Kola, Russian Federation. Light brown fibrous kalifersite on matrix

Kalifersite, (K,Na)5Fe+++7Si20O50(OH)6•12(H2O), Rasvumtchorr, Khibiny, Kola, Russian Federation. Light brown fibrous kalifersite on matrix

Coombsite, K(Mn,Fe,Mg)13(Si,Al)18O42(OH) 14, and Rhodonite, MnSiO3, Watsons Beach, Otago, South Island, New Zealand. Copyright © 2007, JGW

Coombsite, K(Mn,Fe,Mg)13(Si,Al)18O42(OH) 14, and Rhodonite, MnSiO3, Watsons Beach, Otago, South Island, New Zealand. Copyright © 2007, JGW

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