Mineralienatlas - Fossilienatlas
Bicapite (Bicapit) |
Collectors Summary
Color | dunkelrot-braun, wie schwarz |
Streak color | orange |
Lustre | Glasglanz |
Hardness (Mohs) | 1.5 |
Cleavages | vollkommen {100} |
Solubility | Bikapit ist in H2O bei Raumtemperatur sehr langsam löslich (1 h); die Phase zersetzt sich in verdünnter HCl bei Raumtemperatur und löst sich dann langsam auf |
Crystal System | tetragonal, I4/m |
Chemism
Chemical formula |
KNa2Mg2(H2PV5+14O42)·25H2O |
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Empirical formula (analysis) |
(K1.23Na2.23Mg1.48)Σ4.94[H2.51P1.02(V5+13.91Mo6+0.07)Σ13.98O42]·25H2O |
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Chemical composition |
Magnesium, Natrium, Kalium, Phosphor, Sauerstoff, Vanadium, Wasserstoff |
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Strunz 9th edition incl. updates |
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8: Phosphate, Arsenate, Vanadate |
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IMA status |
Neue Mineralien anerkannt August 2018 von der CNMNC |
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Mineral status |
anerkanntes Mineral |
Optical Properties
Crystallography
4/m |
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Space Group number |
87 |
I4/m |
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Cell parameters a (Å) |
11.5446(12) |
Cell parameters b (Å) |
- |
Cell parameters c (Å) |
20.5460(14) |
Cell parameters a/b or c/a |
1.78 |
Cell parameters c/b |
- |
Cell parameters α |
90° |
Cell parameters β |
90° |
Cell parameters γ |
90° |
Z |
2 |
Volume (ų) |
2738.325 |
Strukturell verwandt mit Kegginit; Struktur bestimmt |
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10.14(100), 5.037(10), 4.348(10), 4.142(8), 2.978(29), 2.809(11), 2.583(11), 1.820(8) |
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Calculated from d-spacing and intensity at 0.1541838 nm (Cu) |
Crystals 3D
Open larger view |
Physical Properties
(Co-)Type locality
(Co-)Type locality |
USA/Colorado/Montrose Co./Bull Canyon Mining District/Pickett Corral No. 4 |
Type material |
Das Typ-Material ist in den mineralogischen Sammlungen des Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, Katalognummern 66915 und 66916 hinterlegt. |
Preface
References
Kampf, A.R., Hughes, J.M., Nash, B.P. and Marty, J. (2018) Bicapite, IMA 2018048. CNMNC Newsletter No. 45, October 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx. Anthony R. Kampf; John M. Hughes; Barbara P. Nash; Joe Marty - Bicapite, KNa2Mg2(H2PV145+O42)·25H2O, a new polyoxometalate mineral with a bicapped Keggin anion from the Pickett Corral mine, Montrose County, Colorado, U.S.A. - American Mineralogist (2019) 104 (12): 1851–1856. https://doi.org/10.2138/am-2019-7027 |
Other languages
German |
Bicapit |
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English |
Bicapite |
CNMNC (IMA)-Number
IMA 2018-048 |
CNMNC symbol
Symbol |
Bic |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | 4hNiyeko-0yPtOWm2BM_RQ |
GUID (Global unique identifier) | C96213E2-28E9-4CFB-8FB4-E5A6D8133F45 |
Database ID | 8575 |