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Guérinite

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Formula:
Ca5(AsO4)2(HAsO4)2 · 9H2O
System:
Monoclinic
Colour:
Colorless
Hardness:
Name:
Named by Yevgeny I. Nefedov in 1961 for Henri Guérin [1906- ], French chemist who synthesized the compound.
Dimorph of:
Acicular, bladed, or tabular crystals.

Classification of Guérinite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
8.CJ.75

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
39.2.2.2

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
20.2.11

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
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Type Occurrence of Guérinite

Geological Setting of Type Material:
Post-mine

Physical Properties of Guérinite

Sub-Vitreous, Silky, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Colorless
Streak:
White
Hardness (Mohs):
Tenacity:
Brittle
Density:
2.68 - 2.76 g/cm3 (Measured)    2.74 g/cm3 (Calculated)
Comment:
Acta Cryst. B (1974) 30:1789 structure

Crystallography of Guérinite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 17.63Å, b = 6.734Å, c = 23.47Å
β = 90.6°
Ratio:
a:b:c = 2.618 : 1 : 3.485
Unit Cell Volume:
V 2,786.22 ų (Calculated from Unit Cell)
Z:
5
Comment:
P21/n (synthetic)
X-Ray Powder Diffraction Data:
d-spacingIntensity
14.0 (100)
11.7 (40)
8.7 (30)
4.84 (40)
3.89 (80)
3.49 (60)
3.01 (80)
2.90 (80)
Comments:
ICDD 26-1055

Optical Data of Guérinite

Type:
Biaxial (-)
RI values:
nα = 1.574 - 1.576 nβ = 1.582 nγ = 1.582 - 1.584
2V:
Measured: 7° to 5°
Birefringence:
0.008
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong, also r < v
Optical Extinction:
Z=elongation
Pleochroism:
Non-pleochroic

Chemical Properties of Guérinite

Formula:
Ca5(AsO4)2(HAsO4)2 · 9H2O
Essential elements:
All elements listed in formula:

Relationship of Guérinite to other Species

8.CJ.05StercoriteNa(NH4)HPO4 · 4H2O
8.CJ.10Mundrabillaite(NH4)2Ca(HPO4)2 · H2O
8.CJ.10Swaknoite(NH4)2Ca(HPO4)2 · H2O
8.CJ.15NabaphiteNaBaPO4 · 9H2O
8.CJ.15NastrophiteNa(Sr,Ba)PO4 · 9H2O
8.CJ.20HaidingeriteCaHAsO4 · H2O
8.CJ.25VladimiriteCa4(AsO4)2(AsO3OH) · 4H2O
8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2O
8.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2O
8.CJ.40PhaunouxiteCa3(AsO4)2 · 11H2O
8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2O
8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2O
8.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2O
8.CJ.45Rhabdophane-(Ce)(Ce,La)(PO4) · H2O
8.CJ.45Rhabdophane-(La)(La,Ce)(PO4) · H2O
8.CJ.45Rhabdophane-(Nd)(Nd,Ce,La)(PO4) · H2O
8.CJ.45Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
8.CJ.45SmirnovskiteCaTh(PO4)2 · nH2O
8.CJ.50ArdealiteCa2(HPO4)(SO4) · 4H2O
8.CJ.50BrushiteCa(HPO4) · 2H2O
8.CJ.50Churchite-(Y)Y(PO4) · 2H2O
8.CJ.50PharmacoliteCa(HAsO4) · 2H2O
8.CJ.50Churchite-(Nd)Nd(PO4) · 2H2O
8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2O
8.CJ.60DorfmaniteNa2HPO4 · 2H2O
8.CJ.65SincositeCa(VO)2(PO4)2 · 5H2O
8.CJ.65BariosincositeBa(VO)2(PO4)2 · 4H2O
8.CJ.70CatalanoiteNa2(HPO4) · 8H2O
8.CJ.85NingyoiteCaU(PO4)2 · 1-2H2O
20.2.1BearsiteBe2(AsO4)(OH) · 4H2O
20.2.2BrassiteMg(HAsO4) · 4H2O
20.2.3RössleriteMg(HAsO4) · 7H2O
20.2.4HörnesiteMg3(AsO4)2 · 8H2O
20.2.5WeiliteCa(HAsO4)
20.2.6JohnbaumiteCa5(AsO4)3OH
20.2.7HaidingeriteCaHAsO4 · H2O
20.2.8PharmacoliteCa(HAsO4) · 2H2O
20.2.9SainfelditeCaCa2Ca2(AsO4)2(HAsO4)2 · 4H2O
20.2.10VladimiriteCa4(AsO4)2(AsO3OH) · 4H2O
20.2.12FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2O
20.2.13RauenthaliteCa3(AsO4)2 · 10H2O
20.2.14PhaunouxiteCa3(AsO4)2 · 11H2O
20.2.15McneariteNaCa5(AsO4)(HAsO4)4 · 4H2O
20.2.16BergslagiteCaBeAsO4(OH)
20.2.17AdeliteCaMg(AsO4)(OH)
20.2.18TalmessiteCa2Mg(AsO4)2 · 2H2O
20.2.19IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2O
20.2.20CamgasiteCaMg(AsO4)(OH) · 5H2O
20.2.21PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2O
20.2.22BariopharmacosideriteBa0.5Fe43+(AsO4)3(OH)4 · 5H2O

Other Names for Guérinite

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 Guérinite

Reference List:
American Mineralogist: 47: 416.

Pierrot, R. (1964): Contribution à la minéralogie des arséniates calciques et calcomagnésiens naturels. Bull. Soc. fr. Minéral. Cristallogr. 87, 169-211.

American Mineralogist (1965): 50: 812.

Acta Crystallographica (1974): B30: 1789-1794. [structure]

Internet Links for Guérinite

Localities for Guérinite

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.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Příbram
        • Háje
Minerál 5/1995; Ondruš, P. & Hyršl, J. (1989): New finds and revision of secondary minerals from Příbram district. Acta Universitatis Carolinae, Geologica 1989, 521-533.
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
  • Moravia (Mähren; Maehren)
    • Olomouc Region
      • Javorník (Jauernig)
Sejkora, J.: Uranové ložisko Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 105-110.
France
 
  • Alsace
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
        • Neuenberg
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
      • Thur valley (Thann valley)
        • Kruth
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997; U. Kolitsch (1997): Neufunde von Mineralien aus einigen Vorkommen der Vogesen, Frankreich: Giromagny, Auxelles-Haut und Kruth 1. Aufschluss 48 (4), 243-256.
  • Languedoc-Roussillon
    • Aude
      • Carcassonne
        • Mas-Cabardès
          • Salsigne
Josef Vajdak, Pequa Rare Minerals, Massapequa, NY
  • Provence-Alpes-Côte d'Azur
    • Alpes-Maritimes
      • Duranus
Perroud, P. (1989). "Les minéraux de Duranus." Le Cristallier Suisse, 8(5),pp:216-230
Cuchet S. (2000), Mystérieuse irhtémite à Lucéram, Alpes-Maritimes, Le Règne Minéral, n°36, pp: 38-42
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Hornberg
Gröbner, J. & Schrenk, D. (2005): Die Mineralien des Tunnels bei Hornberg. Der Erzgräber 19, 17-25. (in German)
      • Schenkenzell
        • Wittichen
Carsten Slotta collection
          • Heubach Valley
No reference listed
      • Wolfach
        • Oberwolfach
          • Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
  • Hesse
    • Richelsdorf District
      • Bauhaus
various collections (see photos)
      • Süss
        • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
  • Lower Saxony
    • Harz
      • St Andreasberg District
        • St Andreasberg
No reference listed
  • Saxony-Anhalt
    • Harz
      • Wernigerode
        • Hasserode
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Erzgebirge
      • Marienberg District
        • Lauta
Hajek, W. (2010): Kristallwelten Marienberg. Weise Verlag, München.
      • Schlema-Hartenstein District
T. Witzke (1992) Mineralien-Welt 3(6), 16-18
      • Schneeberg District
        • Neustädtel
Bulletin de Minéralogie 87 (1964), 169; Wittern: "Mineralfundorte in Deutschland", 2001
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Plaka
          • Plaka Mines
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).
Japan
 
  • Kyushu Region
    • Oita prefecture
      • Saiki City
        • Kiura mine (Shin-Kiura mine; Kiura emery mine)
Masayuki Ohnishi, Norimasa Shimobayashi, Shigetomo Kishi, Mitsuo Tanabe, Shoichi Kobayashi (2013) Talmessite from the Uriya deposit at the Kiura mining area, Oita Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108, No. 2 (April), 116-120.
Morocco
 
  • Souss-Massa-Draâ Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azer District (Bou Azzer District)
          • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Bou Azer
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Ightem
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Switzerland
 
  • Wallis (Valais)
    • Anniviers Valley
      • Ayer
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 161+202.; Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
USA
 
  • Michigan
    • Keweenaw Co.
      • Mohawk
[Mineralogical Record - Vol 23 No. 2]
  • Nevada
    • Humboldt Co.
      • Osgood Mts
        • Potosi District
          • Adam Peak
MinRec 19:253-257
      • Potosi District
        • Adam Peak
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Ogdensburg
          • Sterling Hill
The Picking Table:22(1):2; Dunn(1995):Pt5:668.
Mineral and/or Locality  
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