Miguelromeroite
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About Miguelromeroite
Formula:
MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O
Crystal System:
Monoclinic
Member of:
Name:
Named in 2009 by Anthony Robert Kampf in honor of Miguel Romero Sanchez [1926 Oaxaca, Mexico - January 8, 1997 Tehuacán, Pueblo, Mexico], chemist, agribusiness leader, politician, and philanthropist. The Miguel Romero Award is hosted by the Tucson Gem and Mineral Society.
Hureaulite Group.
Mn analogue of sainfeldite. Known as a synthetic compound (Stock et al. 2002).
Note: The samples from the Veta Negra mine, Chile, were originally labeled "villyaellenite".
Mn analogue of sainfeldite. Known as a synthetic compound (Stock et al. 2002).
Note: The samples from the Veta Negra mine, Chile, were originally labeled "villyaellenite".
Classification of Miguelromeroite
Approved
Approval Year:
2009
8.CB.10
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
39.2.1.4
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
Chemical Properties of Miguelromeroite
Formula:
MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O
IMA Formula:
Mn5(AsO3OH)2(AsO4)2(H2O)4
Elements listed:
Crystallography of Miguelromeroite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 18.0300(10) Å, b = 9.2715(5) Å, c = 9.7756(5) Å
β = 96.266(2)°
β = 96.266(2)°
Ratio:
a:b:c = 1.945 : 1 : 1.054
Unit Cell V:
1,624.38 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.279 | (28) |
| 3.357 | (33) |
| 3.234 | (100) |
| 3.074 | (68) |
| 2.973 | (39) |
| 2.676 | (21) |
| 2.341 | (21) |
| 1.680 | (26) |
Type Occurrence of Miguelromeroite
Synonyms of Miguelromeroite
Relationship of Miguelromeroite to other Species
Member of:
Other Members of this group:
| Chongite | Ca3Mg2(AsO4)2(AsO3OH)2·4H2O | Mon. 2/m : B2/b |
| Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2·4H2O | Mon. 2/m : B2/b |
| Hureaulite | (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O | Mon. 2/m : B2/b |
| Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
| Erythrite | 4 photos of Miguelromeroite associated with Erythrite on mindat.org. |
| Parabrandtite | 1 photo of Miguelromeroite associated with Parabrandtite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
| 8.CB.05 | Serrabrancaite | MnPO4 · H2O | Mon. 2/m : B2/b |
| 8.CB.10 | Hureaulite | (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O | Mon. 2/m : B2/b |
| 8.CB.10 | Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| 8.CB.10 | Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| 8.CB.10 | UM1997-09-AsO:CaHMgZn | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O | Mon. |
| 8.CB.10 | Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| 8.CB.15 | Fluckite | CaMn2+(HAsO4)2 · 2H2O | Tric. 1 : P1 |
| 8.CB.15 | Krautite | Mn(HAsO4) · H2O | Mon. 2 : P21 |
| 8.CB.20 | Cobaltkoritnigite | (Co,Zn)(HAsO4) · H2O | Tric. 1 : P1 |
| 8.CB.20 | Koritnigite | Zn(HAsO4) · H2O | Tric. 1 : P1 |
| 8.CB.25 | Yvonite | Cu(HAsO4) · 2H2O | Tric. |
| 8.CB.30 | Geminite | Cu(HAsO4) · H2O | Tric. |
| 8.CB.35 | Schubnelite | Fe3+VO4 · H2O | Tric. |
| 8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O | Mon. |
| 8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O | |
| 8.CB.55 | Irhtemite | Ca4Mg(AsO4)2(HAsO4)2 · 4H2O | Mon. |
| 8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) | Mon. 2/m |
Related Minerals - Dana Grouping (8th Ed.)
| 39.2.1.1 | Hureaulite | (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O | Mon. 2/m : B2/b |
| 39.2.1.2 | Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| 39.2.1.3 | Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
| 39.2.1.4 | UM1997-09-AsO:CaHMgZn | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O | Mon. |
| 39.2.1.6 | Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O | Mon. 2/m : B2/b |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Miguelromeroite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Stock, N., Stucky, G. D. and Cheetham, A. K. (2002): Synthesis and characterization of the synthetic minerals villyaellenite and sarkinite, Mn5(AsO4)2(HAsO4)2•6H2O and Mn2(AsO4)(OH). Z. Anorg. Allg. Chem. 628, 357-362. [as villyaellenite]
Kampf, A.R. (2009): Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series. American Mineralogist, 94, 1535-1540.
Internet Links for Miguelromeroite
mindat.org URL:
https://www.mindat.org/min-39333.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Miguelromeroite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Chile | |
| samples analysed by Jochen Schluter, Gerhard Mohn and Joy Desor |
| Kampf, A. R. (2009). Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series. American Mineralogist, 94(11-12), 1535-1540. | |
Japan (TL) | |
| Kampf, A.R. (2009): Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series. American Mineralogist, 94, 1535-1540. |
Mexico (TL) | |
| Kampf, A.R. (2009): Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series. American Mineralogist, 94, 1535-1540. |
USA (TL) | |
| Kampf, A.R. (2009): Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series. American Mineralogist, 94, 1535-1540. Verbeek, Earl R. and Nikischer, Tony (2010) Changes to the Mineral Species List in 2010, Picking Table v52 (1): 15. |
Veta Negra Mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile