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Shigaite: Mn++7Al4(SO4)2(OH)22·8(H2O) Pyrochroite: Mn(OH)2
Comments: Bronzy yellow crystals of shigaite set in a crystalline matrix of reddish black pychroite. Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 2.8 x 2.3 cm. © John Veevaert
Shigaite: Mn++7Al4(SO4)2(OH)22·8(H2O)
Comments: Cluster of sharp, transparent crystals of brown shigaite to 1.2 cm across. Location: N'Chwaning mine. South Africa. Scale: Aggregate size 1.2 cm. © John Veevaert
Comments: Hexagonal aggregate of orange platy shigaite crystals on a jpale pink rhodocrosite matrix. Location: N'Chwaning mine. South Africa. Scale: Crystal size 3 mm. © Sandro Maggia/Minernet.it