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Phoenicochroite

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Formula:
Pb2(CrO4)O
System:
Monoclinic
Colour:
Dark red, bright red
Hardness:
Name:
From the Greek φοίυικος for "deep red" and χρόα for "colour," in allusion to its colour.
Isostructural with:
This page provides mineralogical data about Phoenicochroite.

Classification of Phoenicochroite

Approved 1980
7.FB.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
F : Chromates
B : With additional O,V, S, Cl
Dana 7th ed.:
35.1.2.1
35.1.2.1

35 : ANHYDROUS CHROMATES
1 : A2XO4
27.2.6

27 : Sulphites, Chromates, Molybdates and Tungstates
2 : Chromates
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First Recorded Occurrence of Phoenicochroite

Year of Discovery:
1839
Associated Minerals at First Recorded Locality:

Physical Properties of Phoenicochroite

Adamantine, Resinous
Diaphaneity (Transparency):
Translucent
Comment:
Glimmering
Colour:
Dark red, bright red
Comment:
Turns lemon-yellow on exposure.
Streak:
Brick-red
Hardness (Mohs):
Cleavage:
Perfect
Perfect in one unspecified direction.
Density:
5.75 g/cm3 (Measured)    

Crystallography of Phoenicochroite

Crystal System:
Monoclinic
Cell Parameters:
a = 14Å, b = 5.67Å, c = 7.13Å
β = 115.22°
Ratio:
a:b:c = 2.469 : 1 : 1.257
Unit Cell Volume:
V 512.03 ų (Calculated from Unit Cell)
Morphology:
Crystals tabular and imperfect, often reticularly intergrown. Massive; thin coatings.

Optical Data of Phoenicochroite

Type:
Biaxial (+)
RI values:
nα = 2.380 nβ = 2.440 nγ = 2.650
2V:
Measured: 58° , Calculated: 62°
Max Birefringence:
δ = 0.270
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
relatively strong

Chemical Properties of Phoenicochroite

Formula:
Pb2(CrO4)O
Essential elements:
All elements listed in formula:

Relationship of Phoenicochroite to other Species

7.FB.10SantanaitePb11(CrO4)O12
7.FB.15Wattersite(Hg2+)2Hg2+(CrO4)O2
7.FB.20Deanesmithite(Hg2+)Hg32+(CrO4)S2O
7.FB.25EdoyleriteHg32+(CrO4)S2
27.2.1TarapacáiteK2[CrO4]
27.2.2LópeziteK2[Cr2O7]
27.2.3ChromatiteCa[CrO4]
27.2.4HashemiteBa(Cr,S)O4
27.2.5CrocoitePb(CrO4)
27.2.7SantanaitePb11(CrO4)O12
27.2.8IranitePb10Cu(CrO4)6(SiO4)2(OH)2
27.2.9HemihedritePb10Zn(CrO4)6(SiO4)2(F,OH)2

Other Names for Phoenicochroite

Other Information

Other Information:
Soluble in HCl with separation of lead chloride.
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 Phoenicochroite

Reference List:
Hermann (1833) Annalen der Physik, Halle, Leipzig: 28: 162 (as Melanochroit).

Thomson, T. (1836) Outlines of Mineralogy, Geology, and Mineral Analysis. 2 volumes, London (as Subsesquichromate of Lead).

Glocker, E.F. (1839) Handbuch der Mineralogie, 2nd. edition, Nürnberg: 612 (as Phœnikochroit).

Haidinger, Wm. (1845): 504 (as Phönicit).

Petterd, W.F. (1910) Catalogue of the Minerals of Tasmania. 221pp., Hobart: 114.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 119.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 649-650.

Williams, S.A., et al (1970), A study of Phoenichchroite-Its structure and properties, American Mineralogist: 55: 784-792.

Bulletin de la Société française de Minéralogie et de Cristallographie (1980): 103: 469.

Klein, W. & Jansen, M. (2010): Refinement of the crystal structure of dilead(II) oxide chromate(VI), Pb2O(CrO4). Z. Kristallogr. NCS 225, 219-220. [http://zkrist_ncs.cpfs.mpg.de/pdf225-2/094_710043.pdf]

Internet Links for Phoenicochroite

Localities for Phoenicochroite

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.
Austria
 
  • Tyrol
    • North Tyrol
      • Inn valley
        • Brixlegg - Schwaz area
Kolitsch, U. (2013): 1799) Anglesit, Brochantit, Calcit, Callaghanit, Connellit, Cuprit, Diopsid, Elyit, Forsterit, Kupfer, Lithargit, Magnesiochromit, Malachit, Monohydrocalcit, Phoenicochroit, Rouait und Willemit in Schlacken der Montanwerke Brixlegg, Tirol. Pp. 111-114 in Niedermayr, G. et al. (2013): Neue Mineralfunde aus Österreich LXII. Carinthia II, 203./123., 91-146.
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Cerro Palestina
        • Estación Cerro Negro
          • Magallanes district
Samples analysed by Dr. Jochen Schluter (Hamburg University), Germany.
Peebles F./Ruiz Fuller C.(1988); "Yacimientos Metalíferos de Chile", Fondecyt, Stgo. de Chile.
      • Sierra Gorda District
M.Dini & A.Molina collection
        • Caracoles
In the collections of Brent Thorne, Christian Rewitzer, and Sandro Maggio.
Samples analysed by Dr. Jochen Schluter (Hamburg University), Germany.
    • Tocopilla Province
      • Sierra Gorda district
        • Caracoles
Peebles F./Ruiz Fuller C.(1988); "Yacimientos Metalíferos de Chile", Fondecyt, Stgo. de Chile.
      • Tocopilla District
maurizio dini collection
Germany
 
  • Saxony
    • Glauchau
      • Callenberg
Lapis, 16 (9), 13-26.
Iran
 
  • Esfahan Province (Isfahan Province; Aspadana Province)
    • Nain County (Nayin County)
      • Anarak District
Adib, D. and Ottemann, J. (1970): Mineralium Deposita, 5, 86-93
  • Yazd Province
    • Nayband (Neyband)
Bariand, P. & Poullen, J.F. (1980): Rare Chromates from Seh-Changi, Iran. Mineralogical Record 11, 293-297
Namibia
 
  • Erongo Region
    • Swakopmund District
      • Namib-Naukluft National Park
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 338 pp. (in English)
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Berezovskii (Berezovskii Zavod)
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 650; Clark, 1993, "Hey's Mineral Index".; Cook, R. B. (2007). Crocoite: Dundas, Tasmania, Australia. Rocks & Minerals, 82(1), 50-54
South Africa
 
  • Mpumalanga Province
    • Nkangala District
      • Delmas
Minerals of South Africa
UK
 
  • Scotland
    • Strathclyde (Lanarkshire)
      • South Lanarkshire
        • Leadhills
          • Wanlock Dod
No reference listed
USA
 
  • Arizona
    • Gila Co.
      • Dripping Spring Mts
        • Banner District
          • Christmas area
            • Christmas
Raman analyzed at the University of Arizona.
    • Maricopa Co.
      • Belmont Mts
        • Wickenburg area
C. Lemanski, Jr.
      • Big Horn Mts
        • Osborn District
          • Hummingbird Spring
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 103, 420; Williams, S.A. (1968), Wickenburgite, a new mineral from Arizona, Am.Min.: 53: 1433-1438; Williams, S.A. & J.W. Anthony (1970), Hemihedrite, a new mineral from Arizona, Am.Min.: 55: 1088-1102; Williams, S.A., et al (1970), A study of Phoenichchroite-Its structure and properties, Am.Min.: 55: 784-792.
          • Tonopah
            • Belmont Mountain
collected by and in the collection of Eckhard D. Stuart
              • Tiger Wash
Collected in the presence of & verified by C. Lemanski, Jr.
Ron Layton
Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 67.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 327.
      • Vulture Mts
        • Vulture District
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 327; Silliman, B. (1881), Mineralogical notes, Amer.Jour.Sci.: 22: 198-205; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 67.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 247, 327; Williams, S.A. (1968), Wickenburgite, a new mineral from AZ, Am.Min.: 53: 1433-1438; Williams, S.A. & J.W. Anthony (1970), Hemihedrite, a new mineral from AZ, Am.Min.: 55: 1088-1102; Williams, S.A., et al (1970), A study of phoenicochroite-Its structure and properties, Am.Min.:: 55: 784-792.
          • Vulture
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 327; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 67.
      • Wickenburg
No reference listed
    • Pinal Co.
      • Mammoth District
        • Tiger
          • St. Anthony deposit
Analyzed at the University of Western Sydney, Austalia.
      • Tortilla Mts
        • Ripsey District
          • Ripsey Hill area
Anthony, J.W., et al (1995), Mineralogy of Arizona (1995), 3rd.ed.: 247; Williams, S.A. & J.W. Anthony (1970), Hemihedrite, a new mineral from AZ, Am.Min.: 55: 1088-1102.
    • Yavapai Co.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 327.
  • Nevada
    • Clark Co.
      • Eldorado Mts
        • Eldorado District (Colorado District)
NBMG Spec. Pub. 31 Minerals of Nevada
    • Esmeralda Co.
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada
    • Lander Co.
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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