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Rowlandite-(Y)

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Henry Augustus Rowland
Formula:
(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Colour:
Pale dull green, greyish white
Lustre:
Vitreous, Waxy
Hardness:
5½ - 6½
Specific Gravity:
4.33 (Calculated)
Crystal System:
Triclinic
Name:
Named after Henry Augustus Rowland (1848-1901), Professor of Physics.
Commonly metamict.


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Classification of Rowlandite-(Y)Hide

Approved, 'Grandfathered' (first described prior to 1959)
9.HG.20

9 : SILICATES (Germanates)
H : Unclassified silicates
G : With REE, Th
55.2.1b.1

55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
2 : Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination
17.1.18

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)

Physical Properties of Rowlandite-(Y)Hide

Vitreous, Waxy
Transparency:
Transparent
Comment:
Waxy when altered
Colour:
Pale dull green, greyish white
Comment:
alters to brick red
Hardness:
5½ - 6½ on Mohs scale
Density:
4.33 g/cm3 (Calculated)
Comment:
4.30 - metamict, 4.55 when heated to 050 for hour, 4.85 when crystalline

Optical Data of Rowlandite-(Y)Hide

Type:
Biaxial (+)
RI values:
nα = 1.763 nγ = 1.769
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Comments:
Isotropic when metamict (n=1.704; 1.76 when heated)

Chemical Properties of Rowlandite-(Y)Hide

Formula:
(Y,Ce)4Fe2+(Si2O7)2F2 (?)
IMA Formula:
Fe2+Y4(Si2O7)2F2

Crystallography of Rowlandite-(Y)Hide

Crystal System:
Triclinic
Cell Parameters:
a = 6.59 Å, b = 8.65 Å, c = 5.53 Å
α = 99.03°, β = 104.12°, γ = 91.47°
Ratio:
a:b:c = 0.762 : 1 : 0.639
Unit Cell V:
301.24 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Small irregular masses.
Comment:
Commonly metamict.

Type Occurrence of Rowlandite-(Y)Hide

Geological Setting of Type Material:
Rare earth pegmatite
Associated Minerals at Type Locality:

Related Minerals - Nickel-Strunz GroupingHide

9.HG.15UmbozeriteNa3Sr4Th[Si(O,OH)3-4]8Amor.

Related Minerals - Dana Grouping (8th Ed.)Hide

55.2.1b.2Thalénite-(Y)Y3Si3O10FMon.
55.2.1b.3Yttrialite-(Y)(Y,Th)2Si2O7

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2Mon.
17.1.3AgrelliteNaCa2Si4O10FTric.
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2
17.1.8LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
17.1.9NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.12ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
17.1.13CanasiteK3Na3Ca5Si12O30(OH)4
17.1.14Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
17.1.15CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
17.1.16BultfonteiniteCa2(HSiO4)F · H2OTric.
17.1.17ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
17.1.19YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
17.1.22Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
17.1.23BurpaliteNa2CaZr(Si2O7)F2Mon.
17.1.24SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon.
17.1.25Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O
17.1.26ZircophylliteK2NaFe2+7Zr2(Si4O12)2O2(OH)4FTric.
17.1.27JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m
17.1.28RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
17.1.29NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2Tet.
17.1.30SonoliteMn2+9(SiO4)4(OH)2Mon.

Other InformationHide

Notes:
Commonly metamict
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 Rowlandite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Frondel, C. (1961): Two yttrium minerals: spencite and rowlandite. Can. Mineral., 6, 576-58l.
Shipovalov, Y.V. and Stepanov, A.V. (1971): X-ray structural study of rowlandite. Issled. Oblast. Khim. Fiz. Metod. Anal. Min. Syr'ya, 189-192 (in Russian).
Peacor, D.R., Simmons, W.B., Jr., Essene, E.J., Heinrich, E.W. (1982): New data on and discreditation of "texasite," "albrittonite," "cuproartinite," "cuprohydromagnesite," and "yttromicrolite," with corrected data on nickelbischofite, rowlandite, and yttrocrasite. American Mineralogist 67, 156-169.

Internet Links for Rowlandite-(Y)Hide

Localities for Rowlandite-(Y)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.
Canada
 
  • Québec
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
          • Lac Saint-Pierre (Wakefield Lake)
www.minsocam.org/msa/Handbook/RowlanditeY.PDF.
Finland
 
  • Western and Inner Finland Region
    • Valkeakoski
Siivola, J. 1975. The lanthanoid conted of some minerals from the Pyörönmaa pegmatite in Kangasala, Finland. Geological Survey of Finland, Bulletin 276, 17 s.
Kazakhstan
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Norway
 
  • Nordland
    • Tysfjord
      • Drag
        • Lapplægeret
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum Skrift 38: 5-28
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.
Sweden
 
  • Lappland
    • Jokkmokk
      • Varjisträsk
Berg & Mineral 9 (23), 27
USA
 
  • Colorado
    • Jefferson Co.
      • South Platte Pegmatite District
Minerals of Colorado (1997) E.B. Eckels
  • Texas
    • Burnet Co.
Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Anthony, Bideaux, Bladh, Nichols (xxx) Handbook of Mineralogy.
    • Llano Co.
      • Bluffton
CM 6 (1961), 576; Canadian Mineralogist (1961): 6: 576-581.; Am Min (1932) Volume 17, pages 381-390,
Mineral and/or Locality  
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