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Rhabdophane-(La)

Big Photo

Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© 2008, J. Weissman

Formula:
(La,Ce)PO
 
4
·H
 
2
O
System:HexagonalColour:Brown, pinkish, ...
Lustre:Hardness:3½
Name:From the Greek, rhabdos, a rod, plus phainesthai, to appear, in allusion to the bands characteristically exhibited in its spectrum, plus the suffix "-(La)" indicating the dominance of La over other REE in this species.


Rhabdophane Group

Classification of Rhabdophane-(La)

IMA status:Approved
Strunz 8th edition ID:7/C.29-20
Nickel-Strunz 10th (pending) edition ID:8.CJ.45

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
Dana 8th edition ID:40.4.7.2

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
Hey's CIM Ref.:19.9.7

19 : Phosphates
9 : Phosphates of rare earths and Sc
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Type Occurrence of Rhabdophane-(La)

Type Locality:Scoville ore deposit, Salisbury, Litchfield Co., Connecticut, USA
General Appearance of Type Material:Incrustations
Year of Discovery:1883
Geological Setting of type material:Limonitic iron ore deposit.
Associated Minerals at type locality:
LimoniteRhabdophane-(Nd)

Physical Properties of Rhabdophane-(La)

Colour:Brown, pinkish, yellowish-white
Hardness (Mohs):3½

Crystallography of Rhabdophane-(La)

Crystal System:Hexagonal

Optical Data of Rhabdophane-(La)

Type:Uniaxial (+)
RI values: nω = 1.654 nε = 1.703
Maximum Birefringence:δ = 0.049

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Rhabdophane-(La)

Formula:
(La,Ce)PO
 
4
·H
 
2
O
Essential elements:H, La, O, P
All elements listed in formula:Ce, H, La, O, P

Relationship of Rhabdophane-(La) to other Species

Related to:
  • Rhabdophane Group
    • Related Minerals - Nickel-Strunz Grouping):
    8.CJ.05Stercorite
    NaNH
     
    4
    		HPO
     
    4
    		·4H
     
    2
    		O
    8.CJ.10Mundrabillaite
    (NH
     
    4
    		)
     
    2
    		Ca(HPO
     
    4
    		)
     
    2
    		·H
     
    2
    		O
    8.CJ.10Swaknoite
    (NH
     
    4
    		)
     
    2
    		Ca[HPO
     
    4
    		]
     
    2
    		 · H
     
    2
    		O
    8.CJ.15Nabaphite
    NaBaPO
     
    4
    		·9H
     
    2
    		O
    8.CJ.15Nastrophite
    Na(Sr,Ba)PO
     
    4
    		·9H
     
    2
    		O
    8.CJ.20Haidingerite
    Ca[HAsO
     
    4
    		] · H
     
    2
    		O
    8.CJ.25Vladimirite
    Ca
     
    5
    		[(HAsO
     
    4
    		)
     
    2
    		|(AsO
     
    4
    		)
     
    2
    		] · 5H
     
    2
    		O
    8.CJ.30Ferrarisite
    Ca
     
    5
    		[(HAsO
     
    4
    		)
     
    2
    		|(AsO
     
    4
    		)
     
    2
    		] · 9H
     
    2
    		O
    8.CJ.30Guérinite
    Ca
     
    5
    		[(HAsO
     
    4
    		)
     
    2
    		|(AsO
     
    4
    		)
     
    2
    		] · 9H
     
    2
    		O
    8.CJ.35Machatschkiite
    (Ca,Na)
     
    6
    		AsO
     
    4
    		(AsO
     
    3
    		OH)
     
    3
    		(PO
     
    4
    		,SO
     
    4
    		)·15H
     
    2
    		O
    8.CJ.40Phaunouxite
    Ca
     
    3
    		[AsO
     
    4
    		]
     
    2
    		 · 11H
     
    2
    		O
    8.CJ.40Rauenthalite
    Ca
     
    3
    		[AsO
     
    4
    		]
     
    2
    		 · 10H
     
    2
    		O
    8.CJ.45Brockite
    (Ca,Th,Ce)(PO
     
    4
    		)·H
     
    2
    		O
    8.CJ.45Grayite
    (Th,Pb,Ca)PO
     
    4
    		·H
     
    2
    		O
    8.CJ.45Ningyoite
    CaU(PO
     
    4
    		)
     
    2
    		·1-2H
     
    2
    		O
    8.CJ.45Rhabdophane-(Ce)
    (Ce,La)PO
     
    4
    		·H
     
    2
    		O
    8.CJ.45Rhabdophane-(Nd)
    (Nd,Ce,La)PO
     
    4
    		·H
     
    2
    		O
    8.CJ.45Tristramite
    (Ca,U,Fe)(PO
     
    4
    		,SO
     
    4
    		)·2H
     
    2
    		O
    8.CJ.45Smirnovskite
    (Th,Ca)PO
     
    4
    		 ·nH
     
    2
    		O
    8.CJ.50Ardealite
    Ca
     
    2
    		[HPO
     
    4
    		|SO
     
    4
    		] · 4H
     
    2
    		O
    8.CJ.50Brushite
    CaHPO
     
    4
    		·2H
     
    2
    		O
    8.CJ.50Churchite-(Y)
    YPO
     
    4
    		·2H
     
    2
    		O
    8.CJ.50Pharmacolite
    CaHAsO
     
    4
    		·2H
     
    2
    		O
    8.CJ.50Churchite-(Nd)
    NdPO
     
    4
    		·2H
     
    2
    		O
    8.CJ.55Mcnearite
    NaCa
     
    5
    		[(HAsO
     
    4
    		)
     
    4
    		|AsO
     
    4
    		] · 4H
     
    2
    		O
    8.CJ.60Dorfmanite
    Na
     
    2
    		(PO
     
    3
    		OH)·2H
     
    2
    		O
    8.CJ.65Sincosite
    CaV
     
    2
    		(PO
     
    4
    		)
     
    2
    		O
     
    2
    		·5H
     
    2
    		O
    8.CJ.65Bariosincosite
    Ba(V
    4+
     
    		O)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    8.CJ.70Catalanoite
    Na
     
    2
    		[HPO
     
    4
    		] · 8H
     
    2
    		O
    Related Minerals - Hey's Index Grouping:
    19.9.1Xenotime-(Y)
    YPO
     
    4
    19.9.2Churchite-(Y)
    YPO
     
    4
    		·2H
     
    2
    		O
    19.9.3Monazite-(Ce)
    (Ce,La,Nd,Th)PO
     
    4
    19.9.4Monazite-(La)
    (La,Ce,Nd)PO
     
    4
    19.9.5Monazite-(Nd)
    (Nd,La,Ce)PO
     
    4
    19.9.6Rhabdophane-(Ce)
    (Ce,La)PO
     
    4
    		·H
     
    2
    		O
    19.9.8Rhabdophane-(Nd)
    (Nd,Ce,La)PO
     
    4
    		·H
     
    2
    		O
    19.9.9Vitusite-(Ce)
    Na
     
    3
    		(Ce,La,Nd)(PO
     
    4
    		)
     
    2
    19.9.10Florencite-(Ce)
    CeAl
     
    3
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    2
    		]
    19.9.11Florencite-(La)
    LaAl
     
    3
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    2
    		]
    19.9.12Florencite-(Nd)
    NdAl
     
    3
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    2
    		]
    19.9.13Kolbeckite
    ScPO
     
    4
    		·2H
     
    2
    		O

    Other Names for Rhabdophane-(La)

    German names:
    ScovillitSkovillit
    Russian names:
    Рабдофан-(La)
    Spanish names:
    Scovillita

    Other Information

    Other Information:Readily soluble in HCl.
    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Rhabdophane-(La)

    Reference List:Brush and Penfield (1883) American Journal of Science: 25: 459 (as Scovillite).

    Brush and Penfield (1884) American Journal of Science: 27: 200 (as Scovillite).

    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.: 774 (as Scovillite).

    Mineralogical Magazine (1984): 48: 146.

    Internet Links for Rhabdophane-(La)

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  • Raman and XRD data at RRUFF project
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  • Rhabdophane-(La) details from Handbook of Mineralogy (PDF)
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    Localities for Rhabdophane-(La)

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    The 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.
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    (TL) indicates type locality. ? 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.
    Burundi
     
    Canada
     
    • Québec
      • Rouville Co.
        • Mont Saint-Hilaire
    		No reference listed
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Gengenbach
          • Haigerach valley
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
    		www.excaliburmineral.com
    USA
     
    • Connecticut
      • Litchfield Co.
        • Salisbury
    		Brush and Penfield (1883) American Journal of Science: 25: 459 (as Scovillite); 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: 774.
    Mineral and/or Locality
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