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Cascandite

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About CascanditeHide

Formula:
Ca(Sc,Fe3+)(HSi3O9)
Colour:
Pale pink
Lustre:
Vitreous
Hardness:
4½ - 5½
Specific Gravity:
3 . 0 3 (Calculated)
Crystal System:
Triclinic
Name:
For Calcium and Scandium in the chemical composition.
A triclinic pyroxenoid with dreier tetrahedral chains (Mellini & Merlino 1982). It is structural related to sérandite and pectolite.
At the Heftejern pegmatite, Norway it occurs as intimate intergrowns with scandiobabingtonite (Raade & Erambert 1999)


Classification of CascanditeHide

Approved
Approval Year:
1980
First Published:
1982
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

Pronounciation of CascanditeHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of CascanditeHide

Vitreous
Transparency:
Transparent
Colour:
Pale pink
Streak:
White
Hardness:
4½ - 5½ on Mohs scale
Cleavage:
Distinct/Good
on {100} and {001}
Density:
3 . 0 3 g/cm3 (Calculated)

Optical Data of CascanditeHide

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 CascanditeHide

Formula:
Ca(Sc,Fe3+)(HSi3O9)
IMA Formula:
CaScSi3O8(OH)
Common Impurities:
Ti,Al,Mn,Mg,Na

Chemical AnalysisHide

Oxide wt%:
 12
SiO251.83 %54.94 %
Sc2O314.74 %16.92 %
FeO4.50 %3.90 %
MgO0.20 %0.07 %
TiO20.08 % %
Al2O30.11 % %
MnO2.32 %0.91 %
CaO16.83 %16.88 %
Na2O0.06 % %
H2O calc2.59 %2.72 %
Total:93.26 %96.34 %
Empirical formulas:
Sample IDEmpirical Formula
1Ca(Sc0.074Mg0.02Al0.01Fe2+0.22Mn0.01)(Na0.01Ca0.04Mn0.10?0.85)Si3O8.02(OH)
2Ca1.00(Sc0.81Fe2+0.18Mn0.04Mg0.01) Σ1.04Si3.03O8(OH)
Sample references:
IDTypeLocalityReference
1Type SpecimenGiacomini Quarry, Agrano, Omegna, Verbano-Cusio-Ossola Province, Piedmont, ItalyMellini, M., Merlino, S., Orlandi, P., Rinaldi, R. (1982): Cascandite and jervisite, two new scandium silicates from Baveno, Italy. American Mineralogist, 67: 599-603.
2Heftetjern pegmatite, Tørdal, Drangedal, Telemark, NorwayRaade, 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

Crystallography of CascanditeHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 9.791(8) Å, b = 10.420(9) Å, c = 7.076(6) Å
α = 98.91(8)°, β = 102.63(8)°, γ = 84.17(8)°
Ratio:
a:b:c = 0.94 : 1 : 0.679
Unit Cell V:
694.22 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Platy crystals elongated along [100] and flattened parallel to {001}. Forms observed: {001},{100},{120},and {5-30}
Comment:
After Mellini & Merlino (1982), spacegroup C-1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.22(20)
6.75(20)
4.46(20)
3.84(20)
3.62(50)
3.10(50)
2.968(50)
2.821(100)

Occurrences of CascanditeHide

Paragenetic Mode(s):

Type Occurrence of CascanditeHide

General Appearance of Type Material:
Light pink crystals up to 0.20 x 0.08 x 0.02 mm in size
Place of Conservation of Type Material:
Muncipal Museum of Natural History, Milan, Italy, Nr.23270
Empirical Formula of Type Material:
Ca(Sc0.074Mg0.02Al0.01Fe2+0.22Mn0.01)(Na0.01Ca0.04Mn0.10?0.85)Si3O8.02(OH)
Geological Setting of Type Material:
Miarolitic cavities in granite
Associated Minerals at Type Locality:
Reference:
Mellini, M., Merlino, S., Orlandi, P., Rinaldi, R. (1982): Cascandite and jervisite, two new scandium silicates from Baveno, Italy. American Mineralogist 67: 599-603

Synonyms of CascanditeHide

Other Language Names for CascanditeHide

Relationship of Cascandite to other SpeciesHide

Other Members of this group:
Barrydawsonite-(Y)Na1.5Y0.5CaSi3O9HMon. 2/m : P21/b
BustamiteCaMn2+(Si2O6)Tric. 1 : P1
FerrobustamiteCaFe2+(Si2O6)Tric.
MurakamiiteCa2LiSi3O8(OH)Tric. 1 : P1
PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
SchizoliteNaCaMnSi3O8(OH)Tric. 1 : P1
SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
TanohataiteLiMn2(HSi3O9)Tric. 1 : P1
VistepiteSnMn4B2Si4O16(OH)2Tric. 1
WollastoniteCaSiO3Tric. 1 : P1

Common AssociatesHide

AlbiteNa(AlSi3O8)
AlbiteNa(AlSi3O8)
JervisiteNaSc3+Si2O6
ScandiobabingtoniteCa2(Fe2+,Mn)ScSi5O14(OH)
Associated Minerals Based on Photo Data:
Scandiobabingtonite4 photos of Cascandite associated with Scandiobabingtonite on mindat.org.
Jervisite3 photos of Cascandite associated with Jervisite on mindat.org.
Kristiansenite2 photos of Cascandite associated with Kristiansenite on mindat.org.
Fluorite2 photos of Cascandite associated with Fluorite on mindat.org.
Albite1 photo of Cascandite associated with Albite on mindat.org.
Calcioancylite-(Ce)1 photo of Cascandite associated with Calcioancylite-(Ce) on mindat.org.
Stilbite subgroup1 photo of Cascandite associated with Stilbite subgroup on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric.
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric.
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 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

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

65.2.1.1bWollastonite-2MCaSiO3Mon.
65.2.1.1cWollastoniteCaSiO3Tric. 1 : P1
65.2.1.1aWollastonite-1ACaSiO3Tric.
65.2.1.2BustamiteCaMn2+(Si2O6)Tric. 1 : P1
65.2.1.3FerrobustamiteCaFe2+(Si2O6)Tric.
65.2.1.4aPectoliteNaCa2Si3O8(OH)Tric. 1 : P1
65.2.1.5SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
65.2.1.7DenisoviteK14+x(Ca,Na,Mn,Fe)48[Si60O162]F16(Ox,OH4−x)·2H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.8.1Thalénite-(Y)Y3Si3O10FMon.
14.8.2Keiviite-(Y)Y2Si2O7
14.8.3Keiviite-(Yb)Yb2Si2O7Mon. 2/m : B2/m
14.8.4Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2xMon.
14.8.5ThortveititeSc2Si2O7Mon.
14.8.6Sazhinite-(Ce)Na2CeSi6O14•6H2O
14.8.7Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2OMon. 2/m
14.8.8Iraqite-(La)KCa2(La,Ce,Th)Si8O20Tet.
14.8.9Ashcroftine-(Y)K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
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
14.8.12JervisiteNaSc3+Si2O6Mon.
14.8.13Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c

Other InformationHide

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 CascanditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Raade, G. and Erambert, M. (1999) An intergrowth of scandiobabingtonite and cascandite from the Heftetjern granite pegmatite, Norway. Neues Jahrbuch für Mineralogie Monatshefte 1999: 545-550.

Internet Links for CascanditeHide

Localities for CascanditeHide

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.
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Feriolo
Albertini, C.,Demartin, F., Guastoni, A. (2006): R.M.I. 240-243; Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
        • 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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