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Cascandite

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Formula:
Ca(Sc,Fe3+)(HSi3O9)
System:
Triclinic
Hardness:
4½ - 5½
Name:
For the dominant cations, calcium and scandium
This page provides mineralogical data about Cascandite.

Classification of Cascandite

Approved 1980
9.DG.07

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
65.2.1.6

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3
14.8.14

14 : Silicates not Containing Aluminum
8 : Silicates of Group III metals other than Al
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http://www.mindat.org/min-914.html
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First Recorded Occurrence of Cascandite

Year of Discovery:
1980

Physical Properties of Cascandite

Hardness (Mohs):
4½ - 5½

Crystallography of Cascandite

Crystal System:
Triclinic
Cell Parameters:
a = 9.79Å, b = 10.42Å, c = 7.07Å
α = 98.91°, β = 102.63°, γ = 84.17°
Ratio:
a:b:c = 0.94 : 1 : 0.679

Optical Data of Cascandite

Type:
Biaxial
RI values:
nα = 1.663 nγ = 1.684
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak

Chemical Properties of Cascandite

Formula:
Ca(Sc,Fe3+)(HSi3O9)
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,Al,Mn,Mg,Na

Relationship of Cascandite to other Species

9.DG.05BustamiteCaMn2+(Si2O6)
9.DG.05FerrobustamiteCaFe2+(Si2O6)
9.DG.05PectoliteNaCa2(HSi3O9)
9.DG.05SéranditeNa(Mn2+,Ca)2(HSi3O9)
9.DG.05WollastoniteCaSiO3
9.DG.05Wollastonite-1ACaSiO3
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2O
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
9.DG.15FoshagiteCa4(Si3O9)(OH)2
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2O
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2O
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2O
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4
9.DG.35XonotliteCa6(Si6O17)(OH)2
9.DG.40HillebranditeCa2(SiO3)(OH)2
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2O
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2O
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2O
9.DG.55EpididymiteNa2Be2Si6O15 · H2O
9.DG.60EudidymiteNa2Be2Si6O15 · H2O
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2O
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)
9.DG.70LitidioniteCuNaKSi4O10
9.DG.70ManaksiteKNaMnSi4O10
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]
9.DG.75TokkoiteK2Ca4Si7O17(O,OH,F)4
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]
9.DG.80CanasiteK2Na4Ca5(Si12O30(OH,F)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2O
9.DG.85MiseriteK(Ca,Ce)4Si5O13(OH)3
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2O
9.DG.92Charoite(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 · ~3H2O
9.DG.95Yuksporite(K,Ba)NaCa2(Si,Ti)4O11(F,OH) · H2O
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14
14.8.1Thalénite-(Y)Y3Si3O10 F
14.8.2Keiviite-(Y)(Y,Yb)2[Si2O7]
14.8.3Keiviite-(Yb)(Yb,Y)2Si2O7
14.8.4Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2x
14.8.5Thortveitite(Sc,Y)2Si2O7
14.8.6Sazhinite-(Ce)Na3Ce[Si6O15] · 6H2O
14.8.7Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2O
14.8.8Iraqite-(La)K(Ca,Na)2(La,Ce,Th)[(Si,Al)8O20]
14.8.9Ashcroftine-(Y)K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2O
14.8.10Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.11Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.12Jervisite(Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6
14.8.13Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3

Other Names for Cascandite

Name in Other Languages:

Other Information

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 Cascandite

Reference List:
Mellini, M. & Merlino, S. (1982): The crystal structure of cascandite, CaScSi3O8(OH). American Mineralogist: 67, 604-609.

Mellini, M., Merlino, S., Orlandi, P., Rinaldi, R. (1982): Cascandite and jervisite, two new scandium silicates from Baveno, Italy. American Mineralogist 67, 599-603.

Internet Links for Cascandite

Localities for Cascandite

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.
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Feriolo
Albertini, C.,Demartin, F., Guastoni, A. (2006): R.M.I. 240-243
        • Oltrefiume
          • Mount Camoscio
Grill, E. (1935): I minerali del granito di Baveno, la fayalite. Periodico di Mineralogia, 129-133. - Gallitelli, P. (1936): Le miche del granito di Baveno. . Periodico di Mineralogia, 61-76 - Pagliani, G. (1948): Le Zeoliti del granito di Baveno. Periodico di Mineralogia, 175-188. - Ravagnani, D. (1974): I giacimenti uraniferi italiani - Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale di Milano, Ed., Milano, 188 pp. - min. Rec. 14 (3), 157-168 - Am. Min. 83, 1330-1334 (1998) - Am. Min. 84, 782-789 (1999). - Guastoni, A. & Pezzotta, F. (2004): Kristiansenite a Baveno, second ritrovamento Mondiale della specie. Rivista Mineralogica Italiana, 4/2004, 247-251. - Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 145, 59-68. - Mineralogist americano (2005) 90, 1442-1452.
Mellini M., Merlino S., Orlandi P., Rinaldi R..(1982): Cascandite and jervisite, two new scandium silicates from Baveno, Italy. Am. Mineral., 67, 599-603. and [MinRec 14:157]
      • Omegna
        • Agrano
Lapis, 13 (9), 29-33+42.
Mellini, M., Merlino, S., Orlandi, P., Rinaldi, R. (1982): Cascandite and jervisite, two new scandium silicates from Baveno, Italy. American Mineralogist, 67, 599-603.
Norway
 
  • Telemark
    • Drangedal
      • Tørdal
Raade, G. & Erambert, M. (1999): An intergrowth of scandiobabingtonite and cascandite from the Heftetjern granite pegmatite, Norway. Neues Jahrbuch für Mineralogie Monatshefte 1999 (12):545-550
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