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Ancylite-(La)

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About Ancylite-(La)Hide

Formula:
LaSr(CO3)2(OH) · H2O
Colour:
Colorless, pale yellowish gray, yellowish brown, yellow
Lustre:
Vitreous
Hardness:
4 - 4½
Crystal System:
Orthorhombic
Member of:
Name:
From the Greek αγκυλός ("ankylos") for "curved", in allusion to its usually rounded and distorted crystal shapes, plus the "-(La)" suffix due to lanthanum being the dominant REE in the composition.
The lanthanum analogue of Ancylite-(Ce).


Classification of Ancylite-(La)Hide

Approved
Approval Year:
1995
5.DC.05

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations

Physical Properties of Ancylite-(La)Hide

Vitreous
Transparency:
Translucent
Colour:
Colorless, pale yellowish gray, yellowish brown, yellow
Comment:
colorless to pale yellow in thin section.
Streak:
White
Hardness:
4 - 4½ on Mohs scale
Tenacity:
Brittle
Fracture:
Conchoidal

Optical Data of Ancylite-(La)Hide

Type:
Biaxial (+)
RI values:
nα = 1.640 nβ = 1.668 nγ = 1.731
2V:
Measured: 70° , Calculated: 70°
Max Birefringence:
δ = 0.091
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v moderate

Chemical Properties of Ancylite-(La)Hide

Formula:
LaSr(CO3)2(OH) · H2O

Crystallography of Ancylite-(La)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 5.072(3) Å, b = 8.589(3) Å, c = 7.276(3) Å
Ratio:
a:b:c = 0.591 : 1 : 0.847
Unit Cell V:
316.97 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals are dipyramidal {111}, with {120}, {101}, platy or short prismatic, faces typically curved, to 2 mm; in druses and uncommonly as skeletal or dendritic aggregates.
Comment:
Space group Pmcn by analogy with ancylite-(Ce).

Type Occurrence of Ancylite-(La)Hide

Place of Conservation of Type Material:
St. Petersburg Mining Institute, St. Petersburg, 2092/1; Geological Museum, Kola Scientific Center, Apatity, Russia.
Geological Setting of Type Material:
A rare mineral in nepheline syenites in differentiated alkalic massifs.
Associated Minerals at Type Locality:

Synonyms of Ancylite-(La)Hide

Other Language Names for Ancylite-(La)Hide

Simplified Chinese:碳锶镧矿
Traditional Chinese:碳鍶鑭礦

Relationship of Ancylite-(La) to other SpeciesHide

Member of:
Other Members of this group:
Ancylite-(Ce)CeSr(CO3)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
Calcioancylite-(Ce)(Ce,Ca,Sr)CO3(OH,H2O)Orth. mmm (2/m 2/m 2/m)
Calcioancylite-(Nd)Ca(Nd,La,Ce)(CO3)2(OH).H2OMon. m : Pm
Gysinite-(Nd)PbNd(CO3)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
Kozoite-(La)(La,Nd)(CO3)(OH)Orth.
Kozoite-(Nd)(Nd,La,Sm,Pr)(CO3)(OH)Orth. mmm (2/m 2/m 2/m)
Unnamed (Ce-analogue of Kozoite-(La) and -(Nd))(Ce,La)(CO3)(OH)Orth.
Unnamed (La-analogue of Calcioancylite-(Ce))(La,Ce,Nd,Ca,Sr)CO3(OH,H2O)Orth.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Catapleiite5 photos of Ancylite-(La) associated with Catapleiite on mindat.org.
Microcline2 photos of Ancylite-(La) associated with Microcline on mindat.org.
Aegirine2 photos of Ancylite-(La) associated with Aegirine on mindat.org.
Magnesio-arfvedsonite2 photos of Ancylite-(La) associated with Magnesio-arfvedsonite on mindat.org.
Lorenzenite2 photos of Ancylite-(La) associated with Lorenzenite on mindat.org.
Chabazite-Na2 photos of Ancylite-(La) associated with Chabazite-Na on mindat.org.
Albite1 photo of Ancylite-(La) associated with Albite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.DC.05Ancylite-(Ce)CeSr(CO3)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
5.DC.05Calcioancylite-(Ce)(Ce,Ca,Sr)CO3(OH,H2O)Orth. mmm (2/m 2/m 2/m)
5.DC.05Calcioancylite-(Nd)Ca(Nd,La,Ce)(CO3)2(OH).H2OMon. m : Pm
5.DC.05Gysinite-(Nd)PbNd(CO3)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
5.DC.05Kozoite-(Nd)(Nd,La,Sm,Pr)(CO3)(OH)Orth. mmm (2/m 2/m 2/m)
5.DC.05Kozoite-(La)(La,Nd)(CO3)(OH)Orth.
5.DC.10Kamphaugite-(Y)Ca(Y,REE)(CO3)2(OH) · H2OTet. 4 2 2 : P41 21 2
5.DC.15SheldrickiteNaCa3(CO3)2F3 · H2OTrig. 3 : P32
5.DC.20Thomasclarkite-(Y)(Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2OMon. 2 : P2
5.DC.25Peterbaylissite(Hg+2)1.5(CO3)(OH) · 2H2OOrth.
5.DC.30Clearcreekite(Hg+2)1.5(CO3)(OH) · 2H2OMon.
5.DC.35NiveolaniteNaBe(CO3)(OH) · 2H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mcc

Other InformationHide

Notes:
Readily soluble in acids.
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 Ancylite-(La)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mineralogical Record: 29: 233.
Zapiski Vserossiyskogo Mineral ogicheskogo Obshchestva: 126(1): 96-108.

Internet Links for Ancylite-(La)Hide

Localities for Ancylite-(La)Hide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Minas Gerais
    • Poços de Caldas alkaline complex
      • Poços de Caldas
Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, MG
Canada
 
  • Québec
    • Montérégie
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
Denmark
 
  • Greenland
    • Kujalleq
      • Narsaq
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
          • Taseq area
            • Taseq Slope (Tasseq Slope)
Petersen, O.V, Niedermayr, G., Gault, R.A., Brandstätter, F. Micheelsen, H.I. & Giester G. (2001): Ancylite-(La) from the Ilímaussaq alkaline complex, South Greenland. Contribution to the mineralogy of Ilímaussaq, no. 106. Neues Jahrbuch für Mineralogie, Monatshefte, 2001(11), 493-504
Finland
 
  • Lapland Region
    • Savukoski
      • Tulppio
        • Sokli carbonatite complex
AL-Ani, Thair and Sarapää, Olli 2016. Abundance of REE bearing minerals in carbonatite and lambrophyre dikes in Kaulus area, Sokli carbonative complex, NE Finland. Geologian Tutkimuskeskus 7/2016.
Russia
 
  • Eastern-Siberian Region
    • Krasnoyarsk Krai
      • Taymyrskiy Autonomous Okrug
        • Severnaya Zemlya archipelago
Pavel M. Kartashov analytical data (1995)
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Vitim Plateau
          • Biraya and Bya Rivers confluence area (Chara Basin)
Koneva A.A., Konev A.A., Vladykin N.V. (2010) Vein complex of the Biraya carbonatite deposit. in Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
A. Konev et al.: European Journal of Mineralogy 17(5):715–721 (2005)
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
        • Eveslogchorr Mt
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65.
        • Kukisvumchorr Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
        • Valepakhk Mt.
Pavel M. Kartashov data
        • Yukspor Mt
          • Hackman Valley
Neues Jahrbuch für Mineralogie, Monatshefte (2003): 10: 461-480.
www.koeln.netsurf.de/~w.steffens/lovo.htm
Mineral and/or Locality  
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