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Jervisite

A valid IMA mineral species
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00633970014947827643020.jpg
Jervisite, etc.

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00094250014947827675093.jpg
Jervisite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
08835030014962261252397.jpg
Jervisite, etc.

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00633970014947827643020.jpg
Jervisite, etc.

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00094250014947827675093.jpg
Jervisite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
01731650014961436168062.jpg
Jervisite, etc.

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00633970014947827643020.jpg
Jervisite, etc.

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00094250014947827675093.jpg
Jervisite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
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About JervisiteHide

02108360015742079743542.jpg
William P. Jervis
Formula:
NaSc3+Si2O6
Colour:
light green
Lustre:
Vitreous
Hardness:
6
Crystal System:
Monoclinic
Name:
Named in 1982 by M. Mellini, S. Merlino, P. Orlandi, and R. Rinaldi in honour of William Paget Jervis (15 November 1832, Belgaum, India - 18 February 1906, Turin, Italy), geologist and director of the Royal Italian Industrial Museum of Turin (Museo Industriale Italiano di Torino).
Isostructural with:
Aegirine
A Sc-bearing Na pyroxene.


Unique IdentifiersHide

Mindat ID:
2093
Long-form identifier:
mindat:1:1:2093:6
GUID
(UUID V4):
f3869839-df1a-413f-b75c-ab37fd1bb918

IMA Classification of JervisiteHide

Classification of JervisiteHide

Strunz-mindat (2024):
9.DA.25

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
Dana 8th ed.:
65.1.3c.6

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
Hey's CIM Ref.:
14.8.12

14 : Silicates not Containing Aluminum
8 : Silicates of Group III metals other than Al

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
JeIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of JervisiteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of JervisiteHide

Lustre:
Vitreous
Colour:
light green
Streak:
white
Hardness:
6 on Mohs scale
Cleavage:
Perfect

Optical Data of JervisiteHide

Type:
Biaxial (+)
RI values:
nα = 1.684(2) nβ = 1.704(6) nγ = 1.733(12)
2V:
Calculated: 69.2°
Max Birefringence:
δ = 0.049
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
None
Comments:
X is parallel to the c axis, Y is parallel to the b axis, and Z is parallel to the a axis.

Optical data from Vignola et al. 2019.

Chemistry of JervisiteHide

Mindat Formula:
NaSc3+Si2O6
Elements listed:
Na, O, Sc, Si - search for minerals with similar chemistry
Common Impurities:
Ti,Al,Mn

Crystallography of JervisiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 9.8478(2) Å, b = 9.0575(1) Å, c = 5.3409(3) Å
β = 106.82(7)°
Ratio:
a:b:c = 1.087 : 1 : 0.59
Unit Cell V:
455.89 ų
Z:
4
Morphology:
Dominant forms {100} and {010}; less-developed are {141}, {221}, and {001}.
Comment:
Vignola et al. 2019

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009492JervisiteHawthorne F C, Grundy H D (1973) Refinement of the crystal structure of NaScSi2O6 Acta Crystallographica B29 2615-26161973synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.038 Å(s)
2.979 Å(m)
2.543 Å(m)
1.647 Å(m)
6.51 Å(w)
4.51 Å(w)
3.389 Å(w)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of JervisiteHide

Type Locality:
ⓘ Giacomini Quarry (Diverio Quarry; Bottigetto Quarry), Agrano, Omegna, Verbano-Cusio-Ossola Province, Piedmont, Italy
General Appearance of Type Material:
Tufts of platelets to about 0.20 x 0.08 x 0.02 mm in size.
Place of Conservation of Type Material:
Municipal Museum of Natural History, Milan, Italy, 23270.
Geological Setting of Type Material:
Granite
Associated Minerals at Type Locality:
QuartzOrthoclaseCascanditeAlbite
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.
Download:
http://www.minsocam.org/ammin/AM67/AM67_599.pdf

Other Language Names for JervisiteHide

German:Jervisit
Spanish:Jervisita

Relationship of Jervisite to other SpeciesHide

Member of:
Clinopyroxene Subgroup > Pyroxene Group
Other Members of this group:
AegirineNaFe3+Si2O6Mon. 2/m : B2/b
Aegirine-augite(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6Mon. 2/m : B2/b
Augite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : B2/b
BurnettiteCaVAlSiO6Mon. 2/m : B2/b
ClinoenstatiteMgSiO3Mon. 2/m : P21/b
ClinoferrosiliteFe2+2Si2O6Mon. 2/m : P21/b
ColomeraiteNaTi3+Si2O6Mon. 2/m : B2/b
DavisiteCaScAlSiO6Mon. 2/m : B2/b
DiopsideCaMgSi2O6Mon. 2/m : B2/b
EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
GrossmaniteCaTi3+ AlSiO6Mon. 2/m : B2/b
HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
JadeiteNa(Al,Fe3+)Si2O6Mon. 2/m : B2/b
JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
KosmochlorNaCrSi2O6Mon. 2/m : B2/b
KushiroiteCaAl[AlSiO6]Mon. 2/m : B2/b
NamansiliteNaMn3+Si2O6Mon. 2/m : B2/b
NatalyiteNaV3+Si2O6Mon. 2/m : B2/b
Omphacite(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6Mon. 2/m
PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon. 2/m : B2/b
Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : P21/b
RyabchikoviteCuMgSi2O6Mon. 2/m : P21/b
SpodumeneLiAlSi2O6Mon. 2/m : B2/b
Tissintite(Ca,Na,◻)AlSi2O6Mon. 2/m : B2/b
UM2001-19-SiO:AlCaMgNa(Na,Mg,Ca)(Mg,Al)Si2O6Mon. 2/m : B2/b
UM2003-36-SiO:CaNaNaCrSi2O6 - CaMgSi2O6Mon. 2/m : B2/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Jervisite associated with CascanditeCaScSi3O8(OH)
1 photo of Jervisite associated with Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH,O)2 · H2O
1 photo of Jervisite associated with QuartzSiO2
1 photo of Jervisite associated with MuscoviteKAl2(AlSi3O10)(OH)2
1 photo of Jervisite associated with AlbiteNa(AlSi3O8)

Related Minerals - Strunz-mindat GroupingHide

9.DA.ProtoenstatiteMg2Si2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DA.RyabchikoviteCuMgSi2O6Mon. 2/m : P21/b
9.DA.ColomeraiteNaTi3+Si2O6Mon. 2/m : B2/b
9.DA.05Donpeacorite(Mn,Mg)MgSi2O6Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.05EnstatiteMg2Si2O6Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.05FerrosiliteFe2+2Si2O6Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.10ClinoenstatiteMgSiO3Mon. 2/m : P21/b
9.DA.10ClinoferrosiliteFe2+2Si2O6Mon. 2/m : P21/b
9.DA.10KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
9.DA.10Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : P21/b
9.DA.15Augite(CaxMgyFez)(Mgy1Fez1)Si2O6Mon. 2/m : B2/b
9.DA.15DiopsideCaMgSi2O6Mon. 2/m : B2/b
9.DA.15EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
9.DA.15HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
9.DA.15 vaJeffersoniteCa(Mn,Zn,Fe)Si2O6
9.DA.15JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
9.DA.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon. 2/m : B2/b
9.DA.15DavisiteCaScAlSiO6Mon. 2/m : B2/b
9.DA.15KushiroiteCaAl[AlSiO6]Mon. 2/m : B2/b
9.DA.15GrossmaniteCaTi3+ AlSiO6Mon. 2/m : B2/b
9.DA.20Aegirine-augite(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6Mon. 2/m : B2/b
9.DA.20Omphacite(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6Mon. 2/m
9.DA.25AegirineNaFe3+Si2O6Mon. 2/m : B2/b
9.DA.25JadeiteNa(Al,Fe3+)Si2O6Mon. 2/m : B2/b
9.DA.25KosmochlorNaCrSi2O6Mon. 2/m : B2/b
9.DA.25NamansiliteNaMn3+Si2O6Mon. 2/m : B2/b
9.DA.25NatalyiteNaV3+Si2O6Mon. 2/m : B2/b
9.DA.25Tissintite(Ca,Na,◻)AlSi2O6Mon. 2/m : B2/b
9.DA.30SpodumeneLiAlSi2O6Mon. 2/m : B2/b
9.DA.35HiroseiteFeSiO3Orth. mmm (2/m 2/m 2/m) : Pnma

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.

Internet Links for JervisiteHide

References for JervisiteHide

Reference List:
Ito, J., Frondel, C. (1968) Syntheses of the scandium analogues of aegirine, spodumene, andradite and melanotekite. American Mineralogist: 53: 1276-1280.
Clark, J.R., Appleman, D.E., Papike, J.J. (1969) Crystal-chemical characterization of clinopyroxenes based on eight new structure refinements. MSA Special Paper: 2: 31-50.
Hawthorne, F.C., Grundy, H.D. (1973) Refinement of the crystal structure of NaScSi2O6. Acta Crystallographica: B29: 2615-2616.
Mellini, M., Merlino, S., Orlandi, P., Rinaldi, R. (1982) Cascandite and jervisite, two new scandium silicates from Baveno, Italy. American Mineralogist: 67: 599-603.
Morimoto, N. (1988) Nomenclature of pyroxenes. Mineralogy and Petrology: 39(1): 55-76. https://rruff.info/uploads/MM52_535.pdf
Ohashi, H., Osawa, T., Sato, A. (1994) NaScSi2O6. Acta Crystallographica: C50: 838-840.
Ferraris, G., & Ciriotti, M. (2003) From anorthite to vesuvianite: an excursion through the minerals first discovered in Italy. Episodes, 26(3), 256-258. http://www.ferraris-prarolo.com/pdf/2003/EpisodesSept2003-256.pdf
Gramenitskiy, E. N., & Shchekina, T. I. (2003) The experimental investigation of scandium behavior in fluorine-bearing melts. http://www.pcmedic.web.ru/conf/khitariada/1-2003/informbul-1_2003/magm-25e.pdf
Gramaccioli, C. M., Campostrini, I., & Orlandi, P. (2004) Scandium minerals in the miaroles of granite at Baveno, Italy. European Journal of Mineralogy: 16(6): 951-956.
Merlino, S., Orlandi, P. (2006) Jervisite, NaScSi2O6: a new occurrence, chemical data and crystal structure. Periodico di Mineralogia: 75: 201-220. http://www.dst.uniroma1.it/riviste/permin/testi/V75/20.pdf
Vignola, Pietro, Rotiroti, Nicola, Hatert, Frédéric, Bersani, Danilo, Andò, Sergio, Varvello, Sergio (2019) Jervisite, NaScSi2O6: Optical Data, Morphology, Raman Spectroscopy, and Crystal Chemistry. The Canadian Mineralogist, 57 (4) 489-498 doi:10.3749/canmin.1900012
(2023) Jervisite. Handbook of Mineralogy. Mineralogical Society of America

Localities for JervisiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Thunder Bay District
      • Walsh Township
Potter et al. (2005)
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Oltrefiume
          • Mount Camoscio
Grill (1935)
Mellini et al. (1982) +2 other references
      • Omegna
        • Agrano
Lapis (9)
Mellini et al. (1982)
Russia
 
  • Murmansk Oblast
    • Pechengsky District
      • Pechenga Ni-Cu ore field
Kompanchenko et al. (2019)
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