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Mapimite

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Formula:
Zn2Fe33+(AsO4)3(OH)4 · 10H2O
System:
Monoclinic
Hardness:
3
Name:
After the type locality, the Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.
This page provides mineralogical data about Mapimite.


Classification of Mapimite

Approved
Approval Year:
1978
8.DC.55

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
42.8.7.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : (AB)5(XO4)3Zq·xH2O
20.9.15

20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe

Physical Properties of Mapimite

Hardness (Mohs):
3

Optical Data of Mapimite

Type:
Biaxial (+)
RI values:
nα = 1.672 nβ = 1.678 nγ = 1.712
2V:
Measured: 50° , Calculated: 48°
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v strong

Chemical Properties of Mapimite

Formula:
Zn2Fe33+(AsO4)3(OH)4 · 10H2O
Elements listed in formula:

Crystallography of Mapimite

Crystal System:
Monoclinic
Cell Parameters:
a = 11.42 Å, b = 11.29 Å, c = 8.66 Å
β = 107.73°
Ratio:
a:b:c = 1.012 : 1 : 0.767
Unit Cell Volume:
V 1,063.52 ų (Calculated from Unit Cell)

Type Occurrence of Mapimite

Relationship of Mapimite to other Species

8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2O
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2O
8.DC.10LegranditeZn2(AsO4)(OH) · H2O
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2O
8.DC.15ArthuriteCuFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15EarlshannoniteMn2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15OjuelaiteZnFe23+(AsO4)2(OH)2 · 4H2O
8.DC.15WhitmoreiteFe2+Fe23+(PO4)2(OH)2 · 4H2O
8.DC.15Cobaltarthurite(Co,Mg)Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15BendadaiteFe2+Fe23+(AsO4)2(OH)2 · 4H2O
8.DC.15KunatiteCuFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:FeHZn)ZnFe23+(PO4)2(OH)2 · 4H2O
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al23+(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2O
8.DC.20BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
8.DC.20CoralloiteMn2+Mn23+(AsO4)2(OH)2 · 4H2O
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2O
8.DC.25FerristrunziteFe3+Fe23+(PO4)2(OH)3 · 5H2O
8.DC.25FerrostrunziteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.25MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.25StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
8.DC.27BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2O
8.DC.30LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
8.DC.30PseudolaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
8.DC.30StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30UshkoviteMgFe23+(PO4)2(OH)2 · 8H2O
8.DC.30FerrolaueiteFe2+Fe23+(PO4)2(OH)2 · 8H2O
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2O
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2O
8.DC.32TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2O
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2O
8.DC.40CacoxeniteFe243+Al(PO4)17O6(OH)12 · 17H2O
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2O
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2O
8.DC.50AllanpringiteFe33+(PO4)2(OH)3 · 5H2O
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2O
8.DC.57OgdensburgiteCa2Fe43+(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2O
20.9.1AngelelliteFe43+(AsO4)2O3
20.9.2ScoroditeFe3+AsO4 · 2H2O
20.9.3KaňkiteFeAsO4 · 3.5H2O
20.9.4FerrisymplesiteFe33+(AsO4)2(OH)3 · 5H2O
20.9.5KaatialaiteFe(H2AsO4)3 · 5H2O
20.9.6SymplesiteFe32+(AsO4)2 · 8H2O
20.9.7ParasymplesiteFe32+(AsO4)2 · 8H2O
20.9.8Natropharmacosiderite(Na,K)Fe43+(AsO4)3(OH)4 · 6-7H2O
20.9.9PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
20.9.10KolfaniteCa2Fe33+O2(AsO4)3 · 2H2O
20.9.11ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
20.9.12YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2O
20.9.13DussertiteBaFe33+(AsO4)(AsO3OH)(OH)6
20.9.14Liskeardite[(Al,Fe)32(AsO4)18(OH)42(H2O)22] · 52H2O
20.9.16OgdensburgiteCa2Fe43+(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O
20.9.17WalentaiteH(Ca,Mn2+,Fe2+)Fe33+(AsO4,PO4)4 · 7H2O

Other Names for Mapimite

Name in Other Languages:
German:Mapimit
Spanish:Mapimita

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 Mapimite

Reference List:
Cesbron, F., Romero, S.M., Williams, A.S. (1981): La mapimite et l'ojuélaïte, deux nouveaux arséniates hydratés de zinc et de fer de la mine Ojuela, Mapimi, Mexique. Bull. Minéral. 104, 582-586.

American Mineralogist (1982): 67: 623-624.

Acta Crystallographica: B37: 1040-1043.

Internet Links for Mapimite

mindat.org URL:
https://www.mindat.org/min-2570.html
Please feel free to link to this page.

Localities for Mapimite

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
No reference listed
Mexico (TL)
 
  • Durango
    • Mun. de Mapimí
      • Mapimí
Cesbron, F., Romero, S.M., Williams, A.S. (1981): La mapimite et l'ojuélaïte, deux nouveaux arséniates hydratés de zinc et de fer de la mine Ojuela, Mapimi, Mexique. Bull. Minéral. 104, 582-586.
Thomas P. Moore (2008) Lapis, 33, #7-8, 33-40.
Mineral and/or Locality  
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