Nontronite : Na0.3Fe2((Si,Al)4O10)(OH)2·nH2O
Hollandite : Ba(Mn4+6Mn3+2)O16
As recorded:
Can Súria quarry, Maçanet de la Selva, Girona, Catalonia, Spain
Photo added to mindat.org
“A new species for Spanish mineralogy. Flattened, radial and scoriaceous growths of yellow calcian Nontronite that have completely replaced earlier Laumontite crystals. Calcian Nontronite is filling vacuoles of a volcanic rock.Pedrera Can Súria, Maçanet de la Selva, La Selva, Girona, Spain.Found in 05-06/2008Specimen size: 10 × 8.2 × 4.8 cm”
Jordi Fabre - 26th September 2008
Photo added to mindat.org
“A new species for Spanish mineralogy. Flattened, radial and scoriaceous growths of yellow calcian Nontronite that have completely replaced earlier Laumontite crystals. Calcian Nontronite is filling vacuoles of a volcanic rock.Pedrera Guixeras, Can Súria, Maçanet de la Selva, La Selva, Girona, Spain.Found in 05-06/2008Specimen size: 10 × 8.2 × 4.8 cm”
Jordi Fabre - 26th September 2008
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