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Manganlotharmeyerite

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Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
© 2004 JBS

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Formula:
Ca(Mn
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
System:MonoclinicColour:Brown-red to dark ...
Hardness:3
Name:For its relationship with Lotharmeyerite
This page provides mineralogical data about Manganlotharmeyerite.

Classification of Manganlotharmeyerite

IMA status:Approved 2002
Strunz 8th edition ID:7/C.31-30
Nickel-Strunz 10th (pending) edition ID:8.CG.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
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Type Occurrence of Manganlotharmeyerite

Type Locality:Starlera Mine, Starlera Valley, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland
Place of Conservation of Type Material:Musée géologique cantonal, Lausanne, Switzerland
Geological Setting of type material:Retrograde metamorphosed Triassic (carbonate-hosted) syngenetic exhalative Mn-ores.
Associated Minerals at type locality:
TilasiteCalciteBraunite

Physical Properties of Manganlotharmeyerite

Colour:Brown-red to dark reddish orange
Streak:Light Brown
Hardness (Mohs):3
Hardness Data:Measured
Cleavage:Distinct/Good
Fracture:Irregular/Uneven
Density (measured):3.77 g/cm3
Density (calculated):3.75 g/cm3

Crystallography of Manganlotharmeyerite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Cell Parameters:a = 9.043Å, b = 6.2314Å, c = 7.3889Å
β = 116.399°
Ratio:a:b:c = 1.451 : 1 : 1.186
Unit Cell Volume:V 327.99 ų
Z:2

Optical Data of Manganlotharmeyerite

Type:Biaxial (+)
RI values: nα = 1.785 nβ = 1.814 nγ = 1.854
2V:Measured: 85° , Calculated: 82°
Maximum Birefringence:δ = 0.069

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v weak

Chemical Properties of Manganlotharmeyerite

Formula:
Ca(Mn
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
Essential elements:As, Ca, H, Mn, O
All elements listed in formula:As, Ca, H, Mn, O, Zn
Analytical Data:Measured with electron microprobe
V2O5 (0.67)
As2O5 (53.41)
MgO (3.95)
Mn2O3 (16.70)
CaO (12.42)
Fe2O3 (0.91)
NiO (1.07)
H2O (8.84) calculated
Empirical Formula:
(Ca
 
0.94
Sr
 
0.01
Na
 
0.01
)(Mn
3+
0.45
◻
 
0.26
Mg
 
0.20
Ni
 
0.03
Fe
 
0.02
Zn
 
0.02
Al
 
0.01
Co
 
0.01
)
 
2
(As
 
0.98
,V
 
0.02
)
 
2
O
 
10
H
 
4.16
Common Impurities:V,Fe,Ni,Co,Zn,Al

Relationship of Manganlotharmeyerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CG.05Cassidyite
Ca
 
2
(Ni
2+
 
,Mg)(PO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Collinsite
Ca
 
2
(Mg,Fe
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Fairfieldite
Ca
 
2
(Mn
2+
 
,Fe
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Gaitite
Ca
 
2
Zn(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Messelite
Ca
 
2
(Fe
2+
 
,Mn
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Parabrandtite
Ca
 
2
Mn
2+
 
(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05Talmessite
Ca
 
2
Mg(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.05β-Uranophane
Ca(UO
 
2
)
 
2
(HSiO
 
4
)
 
2
 · 5H
 
2
O
8.CG.05Hillite
Ca
 
2
(Zn,Mg)(PO
 
4
)
 
2
 · 2 H
 
2
O
8.CG.10Brandtite
Ca
 
2
(Mn
2+
 
,Mg)(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.10Roselite
Ca
 
2
(Co
2+
 
,Mg)(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.10Wendwilsonite
Ca
 
2
(Mg,Co
2+
 
)(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.10Zincroselite
Ca
 
2
Zn(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.10Rruffite
Ca
 
2
Cu(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.15Ferrilotharmeyerite
Ca(Fe
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.15Lotharmeyerite
Ca(Zn,Mn
3+
 
)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Mawbyite
Pb(Fe
3+
 
,Zn)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.15Mounanaite
PbFe
3+
2
(VO
 
4
)
 
2
 · 2(OH,F)
8.CG.15Thometzekite
Pb(Cu,Zn)
 
2
(AsO
 
4
,SO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Tsumcorite
Pb(Zn,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Cobaltlotharmeyerite
Ca(Co,Fe
3+
 
,Ni)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Cabalzarite
Ca(Mg,Al,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.15Krettnichite
(Pb,Sr)(Mn
3+
 
,Co)
 
2
(VO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.15Cobalttsumcorite
Pb(Co,Fe
3+
 
,Ni)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Nickellotharmeyerite
Ca(Ni,Fe
3+
 
,Co)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.15Schneebergite
(Bi
3+
 
,Ca)(Co,Ni,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.15Nickelschneebergite
(Bi
3+
 
,Ca)(Ni,Co,Fe
3+
 
)
 
2
(AsO
 
4
)
 
2
 · 2(OH,H
 
2
O)
8.CG.20Gartrellite
Pb(Cu,Fe
3+
 
,Zn)
 
2
(AsO
 
4
,SO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.20Helmutwinklerite
Pb(Zn,Cu)
 
2
(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.20Zincgartrellite
Pb(Zn,Fe
3+
 
,Cu)
 
2
(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.20Rappoldite
Pb(Co,Ni,Zn)
 
2
(AsO
 
4
)
 
2
 · 2H
 
2
O
8.CG.20Phosphogartrellite
Pb(Cu,Fe
3+
 
)
 
2
(PO
 
4
,AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.20Lukrahnite
Ca(Cu,Zn)(Fe
3+
 
,Zn)(AsO
 
4
)
 
2
 · 2(H
 
2
O,OH)
8.CG.25Pottsite
HPbBi(VO
 
4
)
 
2
 · 2H
 
2
O
8.CG.35Nickeltalmessite
Ca
 
2
Ni(AsO
 
4
)
 
2
 · 2H
 
2
O

Other Names for Manganlotharmeyerite

Synonyms:
IMA2001-026Mn-Lotharmeyerite
Other Languages:
German:Manganlotharmeyerit
Mn-Lotharmeyerit
Russian:Манганлотармейерит
Spanish:Manganlotharmeyerita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Manganlotharmeyerite

Reference List:

- +
Brugger, J., Krivovichev, S.V., Kolitsch, U., Meisser, N., Andrut, M., Ansermet, S., Burns, P.C. (2002) Description and crystal structure of manganlotharmeyerite, Ca[Mn 3+, ◻,Mg]2{AsO4,[AsO2(OH)2]}2(OH,H2O)2 from the Starlera Mn deposit,Swiss Alps, and a redefinition of lotharmeyerite. Canadian Mineralogist (2002): 40: 1597-1608.

Internet Links for Manganlotharmeyerite

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    • Localities for Manganlotharmeyerite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Mexico
     
    • Durango
      • Mun. de Mapimí
        • Mapimí
    		Mineralogical Record (2003) 34:5 The Ojuela Mine
    Thomas P. Moore (2008) Lapis, 33, #7-8, 33-40.
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Hinterrhein Valley
        • Ferrera Valley
          • Starlera Valley
    		Brugger et al (2002), Canadian Mineralogist: 40(6): 1597-1608.
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