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Quenselite: PbMn+++O2(OH)
Comments: Jet black tabular crystals of quenselite, some striated on matrix. Location: Langban, Varmland, Sweden. Scale: Crystal size 1.75mm. © Tom Loomis / Dakota Matrix
Comments: Square crystal of quenselite on matrix. Location: Langban, Sweden. Scale: Crystal size 1 mm. © John Veevaert