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Collection: Rhodonite

Formula: CaMn3Mn[Si5O15]
Often contains minor Mg and Fe. Structural studies and the recognition of new species in the rhodonite group indicate that the former simplified MnSiO3 formula no longer represents the overall rhodonite group. A pure Mn-dominant rhodonite is better expressed as Mn2+Mn2+3Mn2+[Si5O15], and indeed in 2019, this composition was recognized as the new rhodonite-group end-member vittinkiite.
The 5 cation sites M1-M5 exhibit ordering, which has given rise to such species as ferrorhodonite, which requires M5 to be Ca-dominant and M4 to be Fe2+-dominant.
Colour: Red, pink, brownish-red, gray.
Luster: Vitreous, Pearly
Hardness: 5½ - 6½
Specific Gravity: 3.57 - 3.76
Crystal System: Triclinic
Member of: Rhodonite Group
Click here to learn more at Mindat.org
5 products
  • Rhodonite. 8g
    Rhodonite. 8g - The Crystal Connoisseurs
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  • Rhodonite. 7g
    Rhodonite. 7g - The Crystal Connoisseurs
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  • Rhodonite. 3g
    Rhodonite. 3g - The Crystal Connoisseurs
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  • Rhodonite. 3g
    Rhodonite. 3g - The Crystal Connoisseurs
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  • Rhodonite. 10g
    Rhodonite. 10g - The Crystal Connoisseurs
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