Grey, Ian E., Kampf, Anthony R. (2018) Zeolitic water in strunzite-group minerals. Mineralogical Magazine, 82 (2). doi:10.1180/minmag.2017.081.042
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Zeolitic water in strunzite-group minerals | ||
| Journal | Mineralogical Magazine | ||
| Authors | Grey, Ian E. | Author | |
| Kampf, Anthony R. | Author | ||
| Year | 2018 (April) | Volume | 82 |
| Issue | 2 | ||
| Publisher | Mineralogical Society | ||
| DOI | doi:10.1180/minmag.2017.081.042Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 245015 | Long-form Identifier | mindat:1:5:245015:9 |
| GUID | 0 | ||
| Full Reference | Grey, Ian E., Kampf, Anthony R. (2018) Zeolitic water in strunzite-group minerals. Mineralogical Magazine, 82 (2). doi:10.1180/minmag.2017.081.042 | ||
| Plain Text | Grey, Ian E., Kampf, Anthony R. (2018) Zeolitic water in strunzite-group minerals. Mineralogical Magazine, 82 (2). doi:10.1180/minmag.2017.081.042 | ||
| In | (2018) Mineralogical Magazine Vol. 82 (2). Mineralogical Society | ||
| Abstract/Notes | ABSTRACTThe crystal structures have been refined for the first time for the strunzite-group minerals ferristrunzite and ferrostrunzite. Structure refinements are also presented for strunzite from three different localities. A common feature of all refined structural models is the presence of zeolitic water in the interlayer region, displaced by 0.4–0.5 Å from an inversion centre at (½ 0 ½). The refined occupancy of the site ranged from 44% to 100% in the samples studied. H-bonding associated with the zeolitic water causes large displacements, up to 0.7 Å, of neighbouring coordinated water molecules, relative to the structure with no zeolitic water. A new formula is proposed for strunzite-group minerals with divalent interlayer cations as M2+ Fe23+(PO4)2(OH)2·(6.5–x)H2O where M = Mn, Fe or Zn, and 0 < x < 0.5 accounts for varying degrees of dehydration. For ferristrunzite and other potential strunzite-group members with trivalent cations in the interlayer octahedron, the formula is M3+ Fe23+ (PO4)2(OH)3·(5.5–x)H2O. | ||
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