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Silvialite

A valid IMA mineral species

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Photos of Silvialite (8)

Silvialite Gallery Search Photos of Silvialite

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Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

Silvialite

Loitsch Quarry, Weida, Greiz District, Thuringia, Germany

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About SilvialiteHide

Silvia Tschermak

Formula:

(Ca,Na)₄(Al₆Si₆O₂₄)(SO₄,CO₃)

Colour:

White, slightly yellowish

Lustre:

Vitreous

Hardness:

5½

Specific Gravity:

2.75

Crystal System:

Tetragonal

Member of:

Scapolite Group

Name:

Named in honor of Silvia Hillebrand (née Tschermak) (1868–1923), bacteriologist and daughter of the Austrian mineralogist Gustav Tschermak von Sessenegg. The name was first suggested in 1914 for the then-hypothetical sulphate analogue of meionite. The mineral tschermakite is named after her father.

Type Locality:

ⓘ Cone No. 32, Cook Shire, Queensland, Australia

Sulphate-dominant member of the Scapolite Group.

Unique IdentifiersHide

Mindat ID:

7296

Long-form identifier:

mindat:1:1:7296:6

GUID
(UUID V4):

b46c730a-b118-4679-b8c3-bf129e2aa3a1

IMA Classification of SilvialiteHide

IMA status:

Approved

IMA Formula:

Ca₄Al₆Si₆O₂₄(SO₄)

Approval year:

1998

First published:

1999

Type description reference:

Teertstra, D. K., Schindler, M., Sherriff, B. L., Hawthorne, F. C. (1999) Silvialite, a new sulfate-dominant member of the scapolite group with an Al-Si composition near the 14/m–P4₂/n phase transition. Mineralogical Magazine, 63 (3) 321-329 doi:10.1180/002646199548547

Classification of SilvialiteHide

Strunz-mindat (2024):

9.FB.15

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H₂O
B : Tektosilicates with additional anions

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference
Slv	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Slv	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of SilvialiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

White, slightly yellowish

Streak:

White

Hardness:

5½ on Mohs scale

Tenacity:

Brittle

Cleavage:

Distinct/Good
parallel to {100}

Fracture:

Conchoidal

Density:

2.75 g/cm³ (Measured) 2.77 g/cm³ (Calculated)

Optical Data of SilvialiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.585 n_ε = 1.558

Max Birefringence:

δ = 0.027

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Chemistry of SilvialiteHide

Mindat Formula:

(Ca,Na)₄(Al₆Si₆O₂₄)(SO₄,CO₃)

Elements listed:

Al, C, Ca, Na, O, S, Si - search for minerals with similar chemistry

Crystallography of SilvialiteHide

Crystal System:

Tetragonal

Class (H-M):

4/m - Dipyramidal

Space Group:

I4/m

Cell Parameters:

a = 12.160(3) Å, c = 7.560(1) Å

Ratio:

a:c = 1 : 0.622

Unit Cell V:

1,117.86 Å³ (Calculated from Unit Cell)

Comment:

Contains disordered carbonate and sulfate groups along the fourfold axis.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0014537	Silvialite	Teertstra D K, Schindler M, Sherriff B L, Hawthorne F C (1999) Silvialite, a new sulfate-dominant member of the scapolite group with an Al-Si composition near the I4/m-P42/n phase transition Mineralogical Magazine 63 321-329		1999	McBride Province, Australia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Silvialite'
loop_
_publ_author_name
'Teertstra D K'
'Schindler M'
'Sherriff B L'
'Hawthorne F C'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 63 
_journal_year 1999
_journal_page_first 321
_journal_page_last 329
_publ_section_title
;
 Silvialite, a new sulfate-dominant member of the scapolite group with
 an Al-Si composition near the I4/m-P42/n phase transition
;
_database_code_amcsd 0014537
_chemical_compound_source 'McBride Province, Australia'
_chemical_formula_sum '(Na1.548 Ca2.452) (Al4.872 Si7.128) (S.522 C.478) O27.524'
_cell_length_a 12.160
_cell_length_b 12.160
_cell_length_c 7.560
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1117.864
_exptl_crystal_density_diffrn      2.758
_symmetry_space_group_name_H-M 'I 4/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Na   0.35868   0.28328   0.00000   0.38700   0.02180
Ca   0.35868   0.28328   0.00000   0.61300   0.02180
Al1   0.16079   0.09174   0.00000   0.40600   0.00850
Si1   0.16079   0.09174   0.00000   0.59400   0.00850
Al2   0.16030   0.41297   0.20683   0.40600   0.00960
Si2   0.16030   0.41297   0.20683   0.59400   0.00960
S   0.50000   0.50000   0.00000   0.52200   0.01650
C   0.50000   0.50000   0.00000   0.47800   0.01650
O1   0.04213   0.15180   0.00000   1.00000   0.01870
O2   0.18700   0.37300   0.00000   1.00000   0.01740
O3   0.44950   0.15050   0.20680   1.00000   0.02120
O4   0.26660   0.36550   0.67240   1.00000   0.02720
O5   0.40080   0.48150   0.10700   0.26100   0.03100
O6   0.60500   0.51100   0.00000   0.35900   0.07900

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.45 Å	(100)
3.07 Å	(40)
3.82 Å	(20)
3.04 Å	(15)
2.69 Å	(15)
6.03 Å	(5)
3.49 Å	(5)

Comments:

Cone No. 32, Cape York Peninsula, Queensland, Australia. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere	>4.45
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
25 : Evaporites (prebiotic)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites
Stage 5: Initiation of plate tectonics	<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)

Geological Setting:

Granulite facies metamorphic rocks

Type Occurrence of SilvialiteHide

Type Locality:

ⓘ Cone No. 32, Cook Shire, Queensland, Australia

Place of Conservation of Type Material:

Systematic Reference Series of the National Mineral Collection at the Geological Survey of Canada, Ottawa, Ontario, under catalogue number NMC 68080.

Geological Setting of Type Material:

mafic and ultramafic xenoliths from the lower crust or upper mantle

Associated Minerals at Type Locality:

Spinel	Pyrope	Plagioclase	Pargasite	Diopside
Calcite

Reference:

Teertstra, D.K., Schindler, M., Sherriff, B.L., Hawthorne, F.C. (1999) Silvialite, a new sulfate-dominant member of the scapolite group with an Al-Si composition near the I4/m-P42/n phase transition. Mineralogical Magazine: 63: 321-329.

Download:

https://rruff.info/rruff_1.0/uploads/MM63_321.pdf

Synonyms of SilvialiteHide

IMA1998-010

Other Language Names for SilvialiteHide

German:Silvialit
Silvialith

Russian:Сильвиалит

Spanish:Silvialita

Relationship of Silvialite to other SpeciesHide

Member of:

Scapolite Group

Other Members of this group:

Marialite	Na₄Al₃Si₉O₂₄Cl	Tet. 4/m : I4/m
Meionite	Ca₄Al₆Si₆O₂₄CO₃	Tet. 4/m : I4/m
Scapolite	This term generally refers to just the marialite-meionite series, not the full scapolite group, ...	Tet.

Common AssociatesHide

Associated Minerals Based on Photo Data:

2 photos of Silvialite associated with Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
1 photo of Silvialite associated with Sanidine	K(AlSi₃O₈)

Related Minerals - Strunz-mindat Grouping Hide

9.FB.	Steudelite	Na₃(K₁₇Ca₇)Ca₄(Al₂₄Si₂₄O₉₆)(SO₃)₆F₆ · 4H₂O	Hex. 6 m2 : P6₂c
9.FB.	Sapozhnikovite	Na₈(Al₆Si₆O₂₄)(HS)₂	Iso. 4 3m : P4 3n
9.FB.	Betzite	Na₆Ca₂(Al₆Si₆O₂₄)Cl₄	Hex. 6 : P6₃
9.FB.	Slyudyankaite	Na₂₈Ca₄(Si₂₄Al₂₄O₉₆)(SO₄)₆(S₆)_1/3(CO₂) · 2H₂O	Tric. 1 : P1
9.FB.	Bolotinaite	(Na₇◻)(Al₆Si₆O₂₄)F · 4H₂O	Iso. 4 3m : I4 3m
9.FB.	Wenlanzhangite-(Y)	Y₂V³⁺₂V⁴⁺₂(SiO₄)₂O₄(OH)₄	Tric. 1 : P1
9.FB.05	Afghanite	(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄O₉₆)(SO₄)₆Cl₆	Trig. 3m : P3 1c
9.FB.05	Bystrite	(Na,K)₇Ca(Al₆Si₆O₂₄)(S₅)Cl	Trig. 3m : P3 1c
9.FB.05	Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O	Hex. 6 : P6₃
9.FB.05	Cancrisilite	Na₇(Al₅Si₇O₂₄)(CO₃) · 3H₂O	Hex. 6mm : P6₃mc
9.FB.05	Davyne	(Na,K)₆Ca₂(Al₆Si₆O₂₄)(Cl₂,SO₄)₂	Hex. 6/m : P6₃/m
9.FB.05	Franzinite	(Na,K)₆Ca₂(Al₆Si₆O₂₄)(SO₄)₂ · 0.5H₂O	Hex.
9.FB.05	Giuseppettite	(Na,K,Ca)_7-8(Al₆Si₆O₂₄)(SO₄,Cl)_1-2	Trig. 3m : P3 1c
9.FB.05	Hydroxycancrinite	Na₈(Al₆Si₆O₂₄)(OH)₂ · 2H₂O	Hex. 6 : P6₃
9.FB.05	Liottite	(Na,K)₁₆Ca₈(Al₆Si₆O₂₄)₃(SO₄)₅Cl₄	Hex. 6 : P6
9.FB.05	Microsommite	Na₄K₂Ca₂(Al₆Si₆O₂₄)(SO₄)Cl₂	Hex. 6 2 2 : P6₃ 2 2
9.FB.05	Pitiglianoite	Na₆K₂(Al₆Si₆O₂₄)(SO₄) · 2H₂O	Hex. 6 : P6₃
9.FB.05	Quadridavyne	(Na,K)₆Ca₂(Al₆Si₆O₂₄)Cl₄	Hex. 6/m : P6₃/m
9.FB.05	Sacrofanite	(Na₆₁K₁₉Ca₃₂)(Si₈₄Al₈₄O₃₃₆)(SO₄)₂₆Cl₂F₆ · 2H₂O	Hex.
9.FB.05	Tounkite	(Na,Ca,K)₈(Al₆Si₆O₂₄)(SO₄)₂Cl · H₂O	Hex. 6 2 2 : P6₂ 2 2
9.FB.05	Vishnevite	(Na,K)₈(Al₆Si₆O₂₄)(SO₄,CO₃) · 2H₂O	Hex. 6 : P6₃
9.FB.05	Marinellite	(Na,K)₄₂Ca₆(Al₆Si₆O₂₄)₆(SO₄)₈Cl₂ · 3H₂O	Trig. 3m : P3 1c
9.FB.05	Farneseite	(Na,Ca,K)₅₆(Al₆Si₆O₂₄)₇(SO₄)₁₂ · 6H₂O	Hex. 6/m : P6₃/m
9.FB.05	Alloriite	(Na,Ca,K)₂₆Ca₄(Al₆Si₆O₂₄)₄(SO₄)₆Cl₆	Trig. 3m : P3 1c
9.FB.05	Biachellaite	(Na,Ca,K)₈(Al₆Si₆O₂₄)(SO₄)₂(OH)_0.5 · H₂O	Trig. 3 : P3
9.FB.05	Fantappièite	[Na_82.5Ca₃₃K_16.5](Si₉₉Al₉₉O₃₉₆)(SO₄)₃₃ · 4H₂O	Trig. 3 : R3
9.FB.05	Kyanoxalite	Na₇(Al_6-xSi_6+xO₂₄)(C₂O₄)_0.5+x · 5H₂O (0 < x < 0.5)	Hex. 6 : P6₃
9.FB.05	Balliranoite	(Na,K)₆Ca₂(Si₆Al₆O₂₄)Cl₂(CO₃)	Hex. 6 : P6₃
9.FB.05	Carbobystrite	Na₈(Al₆Si₆O₂₄)(CO₃) · 3.5H₂O	Trig. 3m : P3 1c
9.FB.05	Depmeierite	Na₈(Al₆Si₆O₂₄)(PO₄,CO₃)_1-x · 3H₂O (x	Hex. 6 : P6₃
9.FB.05	Kircherite	Na₅Ca₂K(Al₆Si₆O₂₄)(SO₄)₂ · 0.33H₂O	Trig. 3 2 : R3 2
9.FB.05	Sulfhydrylbystrite	Na₅K₂Ca[Al₆Si₆O₂₄](S₅)₂(SH)	Trig. 3m : P3 1c
9.FB.10	Bicchulite	Ca₂(Al₂SiO₆)(OH)₂	Iso. 4 3m : I4 3m
9.FB.10	Danalite	Be₃Fe²⁺₄(SiO₄)₃S	Iso. 4 3m : P4 3n
9.FB.10	Genthelvite	Be₃Zn₄(SiO₄)₃S	Iso. 4 3m : P4 3n
9.FB.10 va	Hackmanite	Na₈Al₆Si₆O₂₄(Cl₂,S)
9.FB.10	Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)	Iso. 4 3m : P4 3n
9.FB.10	Helvine	Be₃Mn²⁺₄(SiO₄)₃S	Iso. 4 3m : P4 3n
9.FB.10	Kamaishilite	Ca₂(Al₂SiO₆)(OH)₂	Tet.
9.FB.10	Lazurite	Na₇Ca(Al₆Si₆O₂₄)(SO₄)(S₃) · H₂O	Iso. 4 3m : P4 3n
9.FB.10	Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O	Iso. 4 3m : P4 3n
9.FB.10	Sodalite	Na₄(Si₃Al₃)O₁₂Cl	Iso. 4 3m : P4 3n
9.FB.10	Tsaregorodtsevite	(N(CH₃)₄)(AlSi₅O₁₂)	Orth. 2 2 2 : I2 2 2
9.FB.10	Tugtupite	Na₄BeAlSi₄O₁₂Cl	Tet. 4 : I4
9.FB.10	Vladimirivanovite	Na₆Ca₂(Al₆Si₆O₂₄)(SO₄,S₃,S₂,Cl)₂ · H₂O	Orth. mmm (2/m 2/m 2/m)
9.FB.15	Marialite	Na₄Al₃Si₉O₂₄Cl	Tet. 4/m : I4/m
9.FB.15	Meionite	Ca₄Al₆Si₆O₂₄CO₃	Tet. 4/m : I4/m

Fluorescence of SilvialiteHide

In UV light:

None

Other InformationHide

Notes:

faint deep-red cathodoluminesecnce.

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 SilvialiteHide

mindat.org URL:

https://www.mindat.org/min-7296.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for SilvialiteHide

Reference List:

Neues Jahrbuch für Mineralogie, Geologie und Paläontologie: 39: 79-125.

Brauns, R. (1914) Skapolithfüuhrende Auswüurflinge aus dem Laacher Seegebiet. Neues Jahrbuch füur Mineralogie, Geologie und Paläaeontologie: 39: 79-125.

Sokolova, E., Hawthorne, F. C. (2008) The Crystal Chemistry of the Scapolite-Group Minerals. i. Crystal Structure and Long-Range Order. The Canadian Mineralogist, 46 (6) 1527-1554 doi:10.3749/canmin.46.6.1527

(2023) Silvialite. Handbook of Mineralogy. Mineralogical Society of America

Localities for SilvialiteHide

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.


Australia (TL)
Queensland Cook Shire ⓘ Cone No. 32 (TL)	Stolz (1987) +1 other reference

Canada
Québec Côte-Nord Manicouagan RCM ⓘ Manicouagan impact structure	Teertstra et al. (1999)

Germany
Thuringia Greiz District Weida ⓘ Loitsch Quarry	Witzke (2000) +1 other reference

Madagascar
Atsimo-Andrefana Benenitra District Ianapera ⓘ Ianapera emerald deposit (Sakalava)	Andrianjakavah et al. +1 other reference

Norway
Vestland Bergen Bergenhus ⓘ Isdal	Putnis et al. (2017)

Spain
Catalonia Girona Olot ⓘ Pomereda volcano	Torró et al. (2018)

Silvialite

About SilvialiteHide

Unique IdentifiersHide

IMA Classification of SilvialiteHide

Classification of SilvialiteHide

Mineral SymbolsHide

Physical Properties of SilvialiteHide

Optical Data of SilvialiteHide

Chemistry of SilvialiteHide

Crystallography of SilvialiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of SilvialiteHide

Synonyms of SilvialiteHide

Other Language Names for SilvialiteHide

Relationship of Silvialite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of SilvialiteHide

Other InformationHide

Internet Links for SilvialiteHide

References for SilvialiteHide

Localities for SilvialiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide