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Ferrilotharmeyerite

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Julius Lothar Meyer
Formula:
Ca(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
System:
Monoclinic
Colour:
Brownish-yellow, yellow
Lustre:
Sub-Adamantine, Waxy, Greasy
Hardness:
3
Name:
Named by Gary Ansell et al. in 1992 for its ferric iron composition and for Julius Lothar Meyer (1830-1895) who developed early concepts for the periodic table of elements.
Isostructural with:
This page provides mineralogical data about Ferrilotharmeyerite.

Classification of Ferrilotharmeyerite

Approved 1986
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
Dana 7th ed.:
40.2.11.2
37.1.6.2

37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
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http://www.mindat.org/min-1495.html
Please feel free to link to this page.

Type Occurrence of Ferrilotharmeyerite

Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, Canada NMC64573
Year of Discovery:
1986
Geological Setting of Type Material:
Dolostone hosted hydrothermal polymetallic ore deposit

Physical Properties of Ferrilotharmeyerite

Sub-Adamantine, Waxy, Greasy
Diaphaneity (Transparency):
Translucent
Colour:
Brownish-yellow, yellow
Streak:
Light yellow
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {001}
Fracture:
Irregular/Uneven
Density:
4.25 g/cm3 (Measured)    4.25(8) g/cm3 (Calculated)
Comment:
Ranges to 4.38 (calculated)

Crystallography of Ferrilotharmeyerite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 8.997Å, b = 6.236Å, c = 7.390Å
β = 115.74°
Ratio:
a:b:c = 1.443 : 1 : 1.185
Unit Cell Volume:
V 373.48 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Short wedge-shaped to tabular crystals
Comment:
Also a 8.98, b 6.230, c 7.380, beta 115.57
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.95 (70)
3.398 (100)
3.175 (100)
2.938 (100)
2.823 (70)
2.702 (70)
2.544 (100)

Optical Data of Ferrilotharmeyerite

Type:
Biaxial (+)
RI values:
nα = 1.830(1) nβ = 1.835 nγ = 1.870(1)
2V:
Measured: 40° , Calculated: 44°
Birefringence:
0.040
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct
Pleochroism:
Strong
Comments:
X= olive green or orange
Y= pale green or yellow
Z= colorless

Chemical Properties of Ferrilotharmeyerite

Formula:
Ca(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
Essential elements:
All elements listed in formula:
Empirical Formula:
Ca(Fe3+|Zn)2[AsO4]2 · 2(OH|H2O)
Common Impurities:
Cu,Al,Pb

Relationship of Ferrilotharmeyerite to other Species

Other Members of Group:
CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2
CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2O
KaliochalciteKCu2(SO4)2[(OH)(H2O)]
Krettnichite(Pb,Sr)(Mn3+,Co)2(VO4)2 · 2(OH,H2O)
LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)
ManganlotharmeyeriteCa(Mn3+,Zn)2(AsO4)2(OH,H2O)2
MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
MounanaitePbFe23+(VO4)2(OH,F)2
NatrochalciteNaCu2(SO4)2(OH) · 2H2O
Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2 · (H2O,OH)2
PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)
RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2O
Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2
ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
TsumcoritePb(Zn,Fe3+)2(AsO4)2 · 2(H2O,OH)
YancowinnaitePbCuAl(AsO4)2OH · H2O
ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)
8.CG.05CassidyiteCa2(Ni2+,Mg)(PO4)2 · 2H2O
8.CG.05CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2O
8.CG.05FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2O
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2O
8.CG.05MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2O
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2O
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2O
8.CG.05HilliteCa2(Zn,Mg)(PO4)2 · 2 H2O
8.CG.10BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2O
8.CG.10RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2O
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2O
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2O
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2O
8.CG.15LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
8.CG.15MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
8.CG.15MounanaitePbFe23+(VO4)2(OH,F)2
8.CG.15ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
8.CG.15TsumcoritePb(Zn,Fe3+)2(AsO4)2 · 2(H2O,OH)
8.CG.15CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
8.CG.15CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2
8.CG.15Krettnichite(Pb,Sr)(Mn3+,Co)2(VO4)2 · 2(OH,H2O)
8.CG.15CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
8.CG.15NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)
8.CG.15ManganlotharmeyeriteCa(Mn3+,Zn)2(AsO4)2(OH,H2O)2
8.CG.15Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2
8.CG.15Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)
8.CG.20GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
8.CG.20HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2O
8.CG.20ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)
8.CG.20RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2O
8.CG.20PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)
8.CG.25PottsiteHPbBi(VO4)2 · 2H2O
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2O
40.2.11.1LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)

Other Names for Ferrilotharmeyerite

Name in Other Languages:

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 Ferrilotharmeyerite

Reference List:
Ansell, H. G., Roberts, A. C., Dunn, P. J., Birch, W. D., Ansell, V. E. & Grice, J. D. (1993): Ferrilotharmeyerite, a new Ca-Zn-Fe3+ hydroxyl arsenate from Tsumeb, Namibia. Canadian Mineralgist: 30, 215-217.

Krause, W., Belendorff, K., Bernhardt, H.-J., McCammon, C., Effenberger, H. & Mikenda, W. (1998): Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite.: European Journal of Mineralogy: 10, 179-206.

Internet Links for Ferrilotharmeyerite

Localities for Ferrilotharmeyerite

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.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
WALENTA, K. (2002): Ferrilotharmeyerit von der Grube Clara. Erzgräber 16, 1-6; KOLITSCH, U., GRÖBNER, J. BLASS, G., GRAF, H.-W. & PRING, A. (2005): Neufunde aus der Grube Clara im mittleren Schwarzwald (II): Dreyerit, Gasparit-(Ce), Klinobisvanit, Kobaltkoritnigit, Metatyuyamunit, Roscoelith, Sengierit, Vésigniéit und Wakefieldit. Lapis 30 (9), 35-39; 58.
  • Saxony
    • Erzgebirge
      • Schneeberg District
W. Krause et al. (2002) Eur. J. Mineral. 14, 115-126
        • Wolfgang Maaßen Mine field
Neues Jahrb. Mineral. Mon. 558-576
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Lavrion (Laurion; Laurium)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Morocco
 
  • Souss-Massa-Draâ Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azer District (Bou Azzer District)
          • Aghbar
[var: Cobaltoan Ferrilotharmeyerite] Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Namibia (TL)
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Can.Min.(1992) 30, 225-227
Mineral and/or Locality  
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