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Coeruleolactite

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System:
Triclinic
Colour:
Milk-white, light blue
Hardness:
5
Name:
From the Greek "coeruleus" for "blue" and "lactis" for "milk" in allusion to its typical colour.
A discredited member of the Turquoise Group.

Originally described from Rindsberg Mine, Katzenelnbogen, Taunus Mts, Rhineland-Palatinate, Germany.

Classification of Coeruleolactite

Discredited 2006
42.9.3.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
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Occurrences of Coeruleolactite

Geological Setting:
Oxidized zones of iron deposits; pegmatite.

Physical Properties of Coeruleolactite

Vitreous, Waxy
Diaphaneity (Transparency):
Translucent
Colour:
Milk-white, light blue
Streak:
White
Hardness (Mohs):
5
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.55 - 2.7 g/cm3 (Measured)    

Crystallography of Coeruleolactite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.529Å, b = 9.951Å, c = 7.782Å
α = 112.51°, β = 116.54°, γ = 68.57°
Ratio:
a:b:c = 0.757 : 1 : 0.782
Z:
1
Morphology:
Microcrystalline to cryptocrystalline; fibrous veinlets, botryoidal aggregates, and crusts.

Optical Data of Coeruleolactite

Type:
Uniaxial (+)
RI values:
nω = 1.580 nε = 1.588
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

Relationship of Coeruleolactite to other Species

Other Names for Coeruleolactite

Name in Other Languages:

Other Information

Other Information:
Soluble in acids and in alkalies.
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 Coeruleolactite

Reference List:
Petersen (1871) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: 353 (as Cœruleolactin).

Genth (1875) Min. Report Pennsylvania: 143.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 59.

Hintze, C. (1933) Hadbuch der Mineralogie. Gruyter & Co., Berlin: 1(4.2): 927 (in German).

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.: 961.

Beiträge zur Mineralogie und Petrographie 6 (1958), 182 [Powder Pat., Chemistry].

American Mineralogist (1958): 43: 1224 [Abstract].

Foord, E.E. & Taggart, J.E. (1998): A reexamination of the turquoise group; the mineral aheylite, planerite (redefined), turquoise and coeruleolactite. Mineralogical Magazine, 62, 93-111.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.: 123.

Internet Links for Coeruleolactite

Localities for Coeruleolactite

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.
Bolivia
 
  • Oruro Department
    • Dalence Province
      • Huanuni
SEM analyses by Gene Foord, U.S. Geological Survey, done as part of an unpublished study of the turquoise group (analyses copies courtesy of Brian Kosnar)
Brazil
 
  • Minas Gerais
    • Doce valley
      • São José da Safira
Cassedanne, J.P & J.O. (1980): Famous mineral localities: The Cruzeiro mine, past and present. Mineralogical Record 11: 363-367 +370
Democratic Republic of Congo (Zaïre)
 
  • Sud-Kivu
    • Mwenga
Van Wambeke, L. (1971): The uranium-bearing mineral bolivarite: new data and a second occurrence. Mineral. Mag. 38, 418-423.
Germany
 
  • Rhineland-Palatinate
    • Taunus
      • Katzenelnbogen
Petersen (1871)
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
UK
 
  • England
    • Cornwall
      • Liskeard District
        • Linkinhorne
          • Minions
Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
USA
 
  • Pennsylvania
    • Chester Co.
      • East Whiteland Township
Foord, E.E. & Taggart, J.E. (1998): A reexamination of the turquoise group; the mineral aheylite, planerite (redefined), turquoise and coeruleolactite. Mineralogical Magazine, 62, 93-111
Uzbekistan
 
  • Kyzylkum Desert
    • Kokpatas village
Mineraly Uzbekistana(Minerals of the Uzbekistan) - izd."FAN" UzbSSR-vol.1-4 - 1976-1977
Mineral and/or Locality  
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