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Fluckite

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About FluckiteHide

Pierre Fluck
Formula:
CaMn2+(HAsO4)2 · 2H2O
Colour:
colorless, pale pink, pale rose red
Lustre:
Sub-Vitreous, Waxy
Hardness:
3½ - 4
Crystal System:
Triclinic
Name:
Named in 1980 by Hubert Bari, Fabien Cesbron, François Permingeat, and Francois Pillard in honor of Pierre Fluck [b. October 29, 1947], Louis Pasteur University, Strasbourg, and later Universite de Haute-Alsace, France, who discovered the first specimen of the species.
This page provides mineralogical data about Fluckite.


Classification of FluckiteHide

Approved
Approval Year:
1978
First Published:
1980
Approval History:
IMA1978-054
8.CB.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
39.1.2.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
20.8.13

20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn

Physical Properties of FluckiteHide

Sub-Vitreous, Waxy
Transparency:
Transparent, Translucent
Colour:
colorless, pale pink, pale rose red
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{010| perfect, {100} good; {101} poor.

Optical Data of FluckiteHide

Type:
Biaxial
RI values:
nα = 1.618 nβ = 1.627 nγ = 1.642
Birefringence:
0.024
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v
Optical Extinction:
2V=large
Pleochroism:
Non-pleochroic

Chemical Properties of FluckiteHide

Formula:
CaMn2+(HAsO4)2 · 2H2O
IMA Formula:
CaMn2+(AsO3OH)2 · 2H2O

Crystallography of FluckiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 8.459 Å, b = 7.613 Å, c = 6.968 Å
α = 82.21°, β = 98.25°, γ = 95.86°
Ratio:
a:b:c = 1.111 : 1 : 0.915
Unit Cell V:
438.42 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Acicular, occasionally slender rod-like to prismatic
Comment:
Bull Min 103:129 (1980) structure

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.32 (50)
7.51 (100)
3.77 (60)
3.53 (90)
3.27 (90)
2.98 (80)
2.69 (60)
2.67 (50)
Comments:
ICDD 33-290; 34-161

Type Occurrence of FluckiteHide

General Appearance of Type Material:
Radiating prismatic crystals
Reference:
Bari, H., Cesbron, F., Permingeat, F., Pillard, F. (1980) La fluckite, arséniate hydraté de calcium et manganèse CaMnH2(AsO4)2.2H2O, une nouvelle espèce minérale. Bulletin de Minéralogie: 103: 122-128.

Synonyms of FluckiteHide

Other Language Names for FluckiteHide

German:Fluckit
Russian:Флюкит
Spanish:Fluckita

Common AssociatesHide

PharmacoliteCa(HAsO4) · 2H2O
PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2O
Associated Minerals Based on Photo Data:
Pharmacolite2 photos of Fluckite associated with Pharmacolite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CB.05SerrabrancaiteMnPO4 · H2OMon. 2/m : B2/b
8.CB.10Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
8.CB.10VillyaelleniteMnMn2Ca2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10UM1997-09-AsO:CaHMgZn(Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2OMon.
8.CB.10NyholmiteCd3Zn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10MiguelromeroiteMnMn2Mn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.15KrautiteMn(HAsO4) · H2OMon. 2 : P21
8.CB.20Cobaltkoritnigite(Co,Zn)(HAsO4) · H2OTric. 1 : P1
8.CB.20KoritnigiteZn(HAsO4) · H2OTric. 1 : P1
8.CB.25YvoniteCu(HAsO4) · 2H2OTric.
8.CB.30GeminiteCu(HAsO4) · H2OTric.
8.CB.35SchubneliteFe3+VO4 · H2OTric.
8.CB.40RadovaniteCu2Fe3+(AsO4)(HAs3+O3)2 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CB.45KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.
8.CB.50KolovratiteNixZny(VO4)0.67(x+y) · nH2O
8.CB.55IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.
8.CB.60BurgessiteCo2(H2O)4[AsO3(OH)]2(H2O)Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.8.1SarkiniteMn2+2(AsO4)(OH)Mon. 2/m : P2/m
20.8.2EveiteMn2+2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
20.8.3ArsenoclasiteMn2+5(AsO4)2(OH)4Orth.
20.8.4FlinkiteMn2+2Mn3+(AsO4)(OH)4Orth.
20.8.5JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 2 2 2
20.8.6AllactiteMn2+7(AsO4)2(OH)8Mon. 2/m : P21/b
20.8.7KrautiteMn(HAsO4) · H2OMon. 2 : P21
20.8.8SynadelphiteMn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
20.8.9SterlinghilliteMn3(AsO4)2 · 4H2OTric. 1 : P1
20.8.10GeigeriteMn2+5(AsO4)2(HAsO4)2 · 10H2OTric.
20.8.11Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
20.8.12Manganohörnesite(Mn,Mg)3(AsO4)2 · 8H2OMon. 2/m : P2/m
20.8.14BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
20.8.15ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric.
20.8.16WallkilldelliteCa2Mn2+3(AsO4)2(OH)4 · 9H2OHex.
20.8.17Berzeliite(NaCa2)Mg2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
20.8.18ManganberzeliiteNaCa2Mn2+2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
20.8.19Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
20.8.20VillyaelleniteMnMn2Ca2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
20.8.21Hematolite(Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23Trig. 3 : R3
20.8.22GrischuniteNaCa2Mn2+5Fe3+(AsO4)6 · 2H2OOrth.

Fluorescence of FluckiteHide

Not fluorescent

Other InformationHide

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 FluckiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bari, H., Cesbron, F., Permingeat, F., Pillard, F. (1980) Fluckite, a hydrated calcium manganese arsenate (La fluckite, arséniate hydraté de calcium et manganèse) CaMnH2(AsO4)2.2H2O, une nouvelle espèce minérale. Bulletin de Minéralogie: 103: 122-128. (in French)
Catti, M., Chiari, G., Ferraris, G. (1980) Fluckite, CaMn(HAsO4)2·2H2O, a structure related by pseudo-polytypism to krautite MnHAsO4·H2O. Bulletin de Minéralogie: 103: 129-134.
Fleischer, M., Cabri, L.J., Chao, G.Y., Pabst, A. (1980) New mineral names. American Mineralogist: 65: 1065-1070.
Đorđević, T., Gerger, S., Karanović, L. (2017) Hydrothermal and ionothermal synthesis of mineral-related arsenates in the system CdO–MO–As2O5 (M2+ = Mg, Co, Ni, Cu, Zn) and their crystal structures. European Journal of Mineralogy: 29: 73-89.

Internet Links for FluckiteHide

Localities for FluckiteHide

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.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Karlovy Vary Region
    • Krušné Hory Mts (Erzgebirge)
      • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
France
 
  • Grand Est
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
          • Sankt Jakob vein
Bull.Min.(1980) 103, 122-128; Bari: Lapis 6/1983
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
USA
 
  • New Jersey
    • Sussex Co.
      • Franklin mining district
        • Ogdensburg
          • Sterling Hill
MinRec 19:274, 18:360; The Picking Table:28(2):3; Dunn(1995):Pt5:668.
Mineral and/or Locality  
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