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Phoenicochroite

A valid IMA mineral species - grandfathered
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About PhoenicochroiteHide

Formula:
Pb2(CrO4)O
Colour:
Dark red, bright red
Lustre:
Adamantine, Resinous
Hardness:
2½ - 3½
Specific Gravity:
7.01
Crystal System:
Monoclinic
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.


Unique IdentifiersHide

Mindat ID:
3194
Long-form identifier:
mindat:1:1:3194:9
GUID
(UUID V4):
df91e484-1c37-4f64-a8d6-ad9ee888110a

IMA Classification of PhoenicochroiteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Pb2O(CrO4)
Approval year:
1980

Classification of PhoenicochroiteHide

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
PhcIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PhoenicochroiteHide

Adamantine, Resinous
Transparency:
Translucent
Comment:
Glimmering
Colour:
Dark red, bright red
Comment:
Turns lemon-yellow on exposure.
Streak:
Brick-red to yellowish orange
Hardness:
2½ - 3½ on Mohs scale
Tenacity:
Sectile
Cleavage:
Perfect
Perfect on {201}; poor on {001}, {010}, {011}.
Density:
7.01 g/cm3 (Measured)    7.075 g/cm3 (Calculated)

Optical Data of PhoenicochroiteHide

Type:
Biaxial (+)
RI values:
nα = 2.340 - 2.380 nβ = 2.380 - 2.440 nγ = 2.650
2V:
Measured: 58° , Calculated: 60°
Max Birefringence:
δ = 0.310
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v, moderately strong to strong
Optical Extinction:
X = b; Y ∧ c = –2°; Z ∧ c = 88°.
Pleochroism:
Weak
Comments:
Absorption: X < Y < Z.

Chemistry of PhoenicochroiteHide

Mindat Formula:
Pb2(CrO4)O

Crystallography of PhoenicochroiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 14.001(7) Å, b = 5.675(3) Å, c = 7.137(5) Å
β = 115.22°
Ratio:
a:b:c = 2.467 : 1 : 1.258
Unit Cell V:
513.02 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals tabular and imperfect, often reticularly intergrown. Massive; thin coatings.

Tabular on {100} or {201}, elongated along [010] or [001], showing {010}, {100}, {110}, {201}, {211}, {310}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000204PhoenicochroiteWilliams S A, McLean W J, Anthony J W (1970) A study of phoenicochroite - its structure and properties American Mineralogist 55 784-79219700293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.39 Å(100)
2.989 Å(100)
3.60 Å(70)
6.40 Å(40)
3.26 Å(40)
4.42 Å(30)
2.840 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
45b : [Other oxidized fumarolic minerals]
47h : [Near-surface oxidized, dehydrated minerals]

Type Occurrence of PhoenicochroiteHide

Associated Minerals at Type Locality:
Reference:
Glocker E F (1839) 19. Phönikechroit. in Grundrib der Mineralogie, mit Einschlub der Geognosie und Petrefactenkunde, Schrag (Nurnberg) 612-612

Synonyms of PhoenicochroiteHide

Other Language Names for PhoenicochroiteHide

Varieties of PhoenicochroiteHide

BerezoviteDiscredited - shown to be altered phoenicochroite by S.A. Williams (1974).

Common AssociatesHide

Associated Minerals Based on Photo Data:
33 photos of Phoenicochroite associated with HemihedritePb10Zn(CrO4)6(SiO4)2(OH)2
27 photos of Phoenicochroite associated with SchwartzembergitePb5H2(IO2)O4Cl3
25 photos of Phoenicochroite associated with WulfenitePb(MoO4)
15 photos of Phoenicochroite associated with PyromorphitePb5(PO4)3Cl
14 photos of Phoenicochroite associated with SeeligeritePb3(IO3)OCl3
14 photos of Phoenicochroite associated with MimetitePb5(AsO4)3Cl
9 photos of Phoenicochroite associated with IranitePb10Cu(CrO4)6(SiO4)2(OH)2
8 photos of Phoenicochroite associated with CrocoitePbCr6+O4
6 photos of Phoenicochroite associated with QuartzSiO2
6 photos of Phoenicochroite associated with WickenburgiteCaPb3Al2Si10O24(OH)6

Related Minerals - Strunz-mindat GroupingHide

7.FB.05GeorgerobinsonitePb4(CrO4)2(OH)2FClOrth. mmm (2/m 2/m 2/m) : Pmmn
7.FB.10SantanaitePb11(CrO4)O12Hex. 6 2 2 : P63 2 2
7.FB.15Wattersite[Hg2]2+2Hg2+[CrO4]O2Mon. 2/m : B2/b
7.FB.20Deanesmithite[Hg2]2+Hg2+3[CrO4]S2OTric. 1 : P1
7.FB.25EdoyleriteHg2+3(CrO4)S2Mon. 2/m : P21/b
7.FB.30ReynoldsitePb2Mn4+2O5(CrO4) Tric. 1 : P1

Other InformationHide

Notes:
Soluble in HCl with separation of lead chloride.
Health Risks:
Chromate minerals contain the carcinogenic and mutagenic chromate ion. Always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Do not pour chromate-containing solutions down the drain.

Internet Links for PhoenicochroiteHide

References for PhoenicochroiteHide

Reference List:

Localities for PhoenicochroiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria
 
  • Tyrol
    • Kufstein District
      • Brixlegg
Kolitsch (2013)
Chile
 
  • Antofagasta
    • Antofagasta Province
      • Cerro Palestina
        • Estación Cerro Negro
          • Magallanes district
Samples analysed by Dr. Jochen Schlüter (Hamburg University)
"Yacimientos Metalíferos de Chile" +1 other reference
      • Sierra Gorda
        • Caracoles mining district
          • Caracoles
In the collections of Brent Thorne
Mücke (1972)
Samples analysed by Dr. Jochen Schlüter (Hamburg University)
    • Tocopilla Province
      • Caracoles
"Yacimientos Metalíferos de Chile" +1 other reference
      • María Elena
Maurizio Dini collection
  • Atacama
    • Chañaral Province
      • Mantos de Oro mining district
T. Kampf analysis
  • Coquimbo
    • Elqui Province
      • Andacollo
M.Dini & A.Molina collection
Germany
 
  • Saxony
    • Zwickau District
      • Callenberg
Leonhardt et al. (1991)
Iran
 
  • Isfahan Province
    • Nain County
      • Anarak District
Adib et al. (1970)
  • South Khorasan Province
    • Tabas County
      • Deyhuk District
        • Nayband (Neyband)
Bariand et al. (1980)
Italy
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
Russo M. et al. (2014)
Demartin et al. (2014) +1 other reference
        • Ottaviano
Demartin et al. (2014) +1 other reference
Namibia
 
  • Erongo Region
    • Arandis Constituency
von Bezing (2007)
Russia (TL)
 
  • Sverdlovsk Oblast
    • Beryozovsky
Palache et al. (1951) +2 other references
South Africa
 
  • Mpumalanga
    • Nkangala District Municipality
      • Victor Khanye Local Municipality
        • Delmas
Cairncross et al. (1995)
            • Dwarsfontein Farm
              • Transvaal Mine
SAMS (South African Micromount Society)
SAMS (South African Micromount Society)
UK
 
  • Scotland
    • South Lanarkshire
      • Leadhills
        • Wanlock Dod
Temple (1955) +1 other reference
USA
 
  • Arizona
    • Gila County
      • Banner Mining District
        • Christmas
Raman analyzed at the University of ...
    • Maricopa County
      • Belmont Mountains
C. Lemanski
Galbraith (1959)
Anthony et al. (1995)
      • Gillespie
        • Black Butte
Michael D. Cline collection (Raman-analysed)
      • Osborn Mining District
        • Hummingbird Springs
Williams (1968) +3 other references
        • Tonopah
          • Belmont Mountain
collected by and in the collection of ...
          • Tiger Wash
Collected in the presence of & verified ...
Ron Layton
      • Vulture Mining District
Silliman (1881) +2 other references
Williams (1968) +3 other references
        • Vulture
Galbraith (1959) +1 other reference
      • Wickenburg
    • Pinal County
      • Tortilla Mountains
        • Ripsey Mining District
          • Ripsey Hill area
Williams et al. (1970) +1 other reference
    • Yavapai County
Anthony et al. (1995)
  • California
    • San Bernardino County
      • Silver Lake Mining District
        • Soda Mountains
          • Baker
            • Otto Mountain
MarekC collection 2016
  • Nevada
    • Clark County
      • Eldorado Mountains
        • Eldorado Mining District (Colorado Mining District)
Castor et al. (2004)
    • Esmeralda County
Castor et al. (2004)
Robert E.Walstrom Collection +1 other reference
    • Lander County
Castor et al. (2004)
 
矿物 and/or 产地  
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