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Potassic-magnesio-arfvedsonite

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02839400014950158238761.jpg
Potassic-magnesio-arfvedsonite, etc.

Kedrovyi alkaline Massif, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
03055500014948666721830.jpg
Potassic-magnesio-arfvedsonite

Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia
09114620014948666738995.jpg
Potassic-magnesio-arfvedsonite

Kovdor Massif, Murmansk Oblast, Russia
06981650014959241784692.jpg
Potassic-magnesio-arfvedsonite, etc.

Kedrovyi alkaline Massif, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
08727640015853212109714.jpg
Potassic-magnesio-arfvedsonite

Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia
06297650015853212115169.jpg
Potassic-magnesio-arfvedsonite

Kovdor Massif, Murmansk Oblast, Russia
02839400014950158238761.jpg
Potassic-magnesio-arfvedsonite, etc.

Kedrovyi alkaline Massif, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
03055500014948666721830.jpg
Potassic-magnesio-arfvedsonite

Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia
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About Potassic-magnesio-arfvedsoniteHide

Formula:
[K][Na2][Mg4Fe3+]Si8O22(OH)2
The arfvedsonite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu with Fe as the dominant element in the C3+ position.

Potassic-magnesio-arfvedsonite is defined with

A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
Colour:
Greenish-brown
Lustre:
Vitreous
Specific Gravity:
3.24
Crystal System:
Monoclinic
Name:
Named in 2019 according to the International Mineralogical Association amphibole nomenclature (Hawthorne 2012), for its relationship to arfvedsonite, with dominant potassium and magnesium.
Originally reported from Pendennis, Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK.


Classification of Potassic-magnesio-arfvedsoniteHide

IMA status:
Approved
Approval year:
2017
First published:
2019
Strunz 8th ed.:
8/F.08-102
Strunz 9th ed.:
9.DE.
Nickel-Strunz 10th (pending) ed.:
9.DE.25

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles

Pronounciation of Potassic-magnesio-arfvedsoniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Potassic-magnesio-arfvedsoniteHide

Lustre:
Vitreous
Transparency:
Translucent
Colour:
Greenish-brown
Streak:
Grey-green
Tenacity:
Brittle
Cleavage:
Perfect
{110}
Fracture:
Splintery
Density:
3.24 g/cm3 (Measured)    3.19 g/cm3 (Calculated)

Optical Data of Potassic-magnesio-arfvedsoniteHide

Type:
Biaxial (-)
RI values:
nα = 1.645(2) nβ = 1.655(2) nγ = 1.650(2)
2V:
Measured: 60° , Calculated: 70°
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
strong, r > v
Pleochroism:
Strong
Comments:
X = yellow pale-green, Y = green, Z = dark-violet brown.
X < Y < Z.

Chemical Properties of Potassic-magnesio-arfvedsoniteHide

Formula:
[K][Na2][Mg4Fe3+]Si8O22(OH)2

The arfvedsonite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu with Fe as the dominant element in the C3+ position.

Potassic-magnesio-arfvedsonite is defined with

A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
IMA Formula:
KNa2(Mg4Fe3+)Si8O22(OH)2
Elements listed:
Fe, H, K, Mg, Na, O, Si - search for minerals with similar chemistry

Crystallography of Potassic-magnesio-arfvedsoniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.9804(11) Å, b = 18.0127(19) Å, c = 5.2971(16) Å
β = 104.341(2)°
Ratio:
a:b:c = 0.554 : 1 : 0.294
Unit Cell V:
922.61 ų
Morphology:
{110}, {010}, {001}

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.519 Å(80.5)
3.402 Å(67.3)
3.295 Å(41.0)
3.173 Å(65.0)
2.752 Å(35.6)
2.715 Å(100.0)
2.591 Å(44.1)
2.542 Å(73.2)
2.348 Å(38.5)
2.174 Å(42.0)

Type Occurrence of Potassic-magnesio-arfvedsoniteHide

Type Locality:
ⓘ Buhovo-Seslavtsi pluton, Stolichna Municipality (Sofia Capital Municipality), Sofia City Province, Bulgaria
General Appearance of Type Material:
Prismatic to acicular crystals usually 0.2-0.5 mm in length. Also isometric and rounded clusters or polycrystalline aggregates.
Place of Conservation of Type Material:
In the collection of the Museum of Mineralogy, Petrology and Economic Geology, Sofia University ‘St. Kliment Ohridski’, 15 Tsar Osvoboditel Blvd, Sofia 1504, Bulgaria, catalogue number M 7661.
Geological Setting of Type Material:
Peralkaline minette dyke
Associated Minerals at Type Locality:
QuartzK FeldsparAegirine-augite
Reference:
Dyulgerov, M., Oberti, R., Platevoet, B., Kadiyski, M., Rusanov, V. (2019) Potassic-magnesio-arfvedsonite, KNa2(MgFe2+Fe3+)5Si8O22(OH)2: mineral description and crystal chemistry. Mineralogical Magazine: 83(3): 465-472.

Synonyms of Potassic-magnesio-arfvedsoniteHide

Relationship of Potassic-magnesio-arfvedsonite to other SpeciesHide

Member of:
Arfvedsonite Root Name Group > Sodium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Other Members of this group:
Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Fluoro-arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22F2
Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon.
Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]Mon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Potassic-magnesio-arfvedsonite associated with Strontium-bearing Potassic-richteriteK[(Ca,Sr)Na][Mg5]Si8O22(OH)2
3 photos of Potassic-magnesio-arfvedsonite associated with MicroclineK(AlSi3O8)

Related Minerals - Nickel-Strunz GroupingHide

9.DE.Clino-suenoite◻{Mn2+2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2Mon.
9.DE.05Clino-holmquistite Root Name Group◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
9.DE.05Grunerite◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Permanganogrunerite◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2Mon.
9.DE.05Ferri-fluoro-leakeite{Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2Mon. 2/m : B2/m
9.DE.10Ferri-tschermakite◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
9.DE.10Ferro-actinolite◻Ca2Fe2+5(Si8O22)OH2Mon.
9.DE.10Ferro-hornblende◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2Mon.
9.DE.10Ferro-tschermakite◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10JoesmithitePb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2Mon.
9.DE.10Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.10Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10CannilloiteCaCa2(Mg4Al)(Si5Al3O22)OH2Mon.
9.DE.10Fluoro-cannilloiteCaCa2(Mg4Al)(Si5Al3)O22F2Mon.
9.DE.10Parvo-manganotremolite◻{CaMn2+}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Fluoro-tremolite◻{Ca2}{Mg5}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Ferro-ferri-hornblende◻Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.15EdeniteNaCa2Mg5(Si7Al)O22OH2Mon.
9.DE.15Ferro-edeniteNaCa2Fe2+5(Si7Al)O22OH2Mon.
9.DE.15Ferro-kaersutiteNaCa2{Fe2+3AlTi}(Si6Al2O22)O2Mon.
9.DE.15Ferro-pargasiteNaCa2(Fe2+4Al)(Si6Al2)O22(OH)2Mon.
9.DE.15HastingsiteNaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2Mon.
9.DE.15KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2Mon.
9.DE.15Magnesio-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Mon.
9.DE.15PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2Mon.
9.DE.15Fluoro-edeniteNaCa2Mg5(Si7Al)O22F2Mon. 2/m : P2/m
9.DE.15Potassic-ferro-ferri-sadanagaite{K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-pargasiteKCa2(Mg4Al)(Si6Al2)O22(OH)2Mon.
9.DE.15Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Magnesio-fluoro-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Potassic-fluoro-hastingsiteKCa2(Fe2+4Fe3+)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-hastingsiteKCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2Mon. 2/m : B2/m
9.DE.15Fluoro-pargasiteNaCa2(Mg4Al)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-pargasiteKCa2(Mg4Al)(Si6Al2)O22Cl2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-chloro-edeniteKCa2Fe2+5(AlSi7O22)Cl2
9.DE.15Potassic-magnesio-hastingsiteKCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-pargasiteKCa2(Fe2+4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Chromio-pargasite{Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-fluoro-pargasiteKCa2(Mg4Al)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Ferri-kaersutiteNaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2Mon. 2/m : B2/m
9.DE.15Vanadio-pargasiteNaCa2(Mg3+4V)(Al2Si6)O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Barroisite◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2Mon.
9.DE.20Ferro-ferri-barroisite◻(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-winchite◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
9.DE.20Ferri-barroisite◻(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
9.DE.20Ferro-ferri-katophoriteNa(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-barroisite◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-richterite{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.20Ferro-winchite ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2Mon.
9.DE.20Ferro-katophorite{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2Mon.
9.DE.20Ferri-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2Mon.
9.DE.20Magnesiotaramite{Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2Mon.
9.DE.20Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.20Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2Mon. 2/m
9.DE.20Taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon. 2/m
9.DE.20Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Potassic-fluoro-richterite{K}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon.
9.DE.20Potassic-richterite{K}{CaNa}{Mg5}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferri-ghoseite◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2Mon. 2/m
9.DE.20Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.20Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2Mon.
9.DE.20Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2Mon. 2/m : B2/m
9.DE.25Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25EckermanniteNaNa2(Mg4Al}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-eckermanniteNaNa2(Fe2+4Al)Si8O22(OH)2Mon.
9.DE.25Ferro-glaucophane◻[Na2][Fe2+3Al2]Si8O22(OH)2Mon.
9.DE.25Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2Mon.
9.DE.25Potassic-mangani-leakeite[(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-ferri-eckermannite{Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2Mon.
9.DE.25Ferri-leakeite[Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Magnesio-riebeckite◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25NybøiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Riebeckite◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-mangani-ungarettiiteNaNa2(Mn2+2Mn3+3)(Si8O22)O2Mon.
9.DE.25Ferro-ferri-nybøiteNaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Clino-ferro-ferri-holmquistite◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferri-nybøiteNaNa2(Mg3Fe3+2](AlSi7O22)(OH)2Mon.
9.DE.25Ferro-ferri-leakeite[Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Ferro-ferri-fluoro-leakeiteNa(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2Mon.
9.DE.25Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon.
9.DE.25Ferri-pedrizite[Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Potassic-ferri-leakeite[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-nybøiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2Mon. 2/m : B2/m
9.DE.25Mangani-dellaventuraiteNaNa2(MgMn3+2Ti4+Li)Si8O22O2Mon. 2/m : B2/m
9.DE.25Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangani-obertiiteNaNa2(Mg3Mn3+Ti4+)Si8O22O2Mon. 2/m : B2/m
9.DE.25Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]Mon. 2/m : B2/m
9.DE.25Ferro-ferri-pedrizite[Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25PedriziteNaLi2(LiMg2Al2)(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-pedriziteNaLi2(Fe2+2Al2Li)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-fluoro-pedriziteNa(Li2)(Fe2+2Al2Li)[Si8O22]F2Mon. 2/m : B2/m
9.DE.25Fluoro-leakeiteNaNa2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-obertiiteNaNa2(Fe2+3Fe3+Ti)Si8O22O2Mon. 2/m : B2/m
9.DE.25Ferri-obertiiteNaNa2(Mg3Fe3+Ti)Si8O22O2Mon. 2/m : B2/m

Fluorescence of Potassic-magnesio-arfvedsoniteHide

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 Potassic-magnesio-arfvedsoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.
Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.
Dyulgerov, M., Platevoet, B., Oberti, R., Kadiyski, M. and Rusanov, V. (2017) Potassic-magnesio-arfvedsonite, IMA 2016-083. CNMNC Newsletter No. 35, February 2017, page 210; Mineralogical Magazine 81: 209–213.
Dyulgerov, M., Oberti, R., Platevoet, B., Kadiyski, M., Rusanov, V. (2019) Potassic-magnesio-arfvedsonite, KNa2(MgFe2+Fe3+)5Si8O22(OH)2: mineral description and crystal chemistry. Mineralogical Magazine: 83(3): 465-472.

Internet Links for Potassic-magnesio-arfvedsoniteHide

Localities for Potassic-magnesio-arfvedsoniteHide

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.
Bulgaria (TL)
 
  • Sofia City Province
    • Stolichna Municipality (Sofia Capital Municipality)
Dyulgerov, M., Platevoet, B., Oberti, R., Kadiyski, M. and Rusanov, V. (2017) Potassic-magnesio-arfvedsonite, IMA 2016-083. CNMNC Newsletter No. 35, February 2017, page 210; Mineralogical Magazine, 81, 209–213.
Canada
 
  • Nunavut
    • Qikiqtaaluk Region
      • Baffin Island
Hogarth (1997) Canadian Mineralogist 35, 53-78.
China
Zhao, Y., Li, D. (2003) Amphiboles in skarn deposits of China. Mineral Deposits: 22(4): 345-359.
Czech Republic
 
  • Vysočina Region
    • Třebíč District
      • Šebkovice
Krmíček, L., Cempírek J., Havlín A., Přichystal A., Houzar S, Krmíčková M, Gadas P. (2011): Mineralogy and petrogenesis of a Ba–Ti–Zr-rich peralkaline dyke from Šebkovice (Czech Republic): Recognition of the most lamproitic Variscan intrusion. In: Lithos, 121 (2011), 75-86; Elsevier.
India
 
  • Telangana
    • Nalgonda District
Kaur, G., & Mitchell, R. H. (2017) Mineralogy of the baotite-bearing Gundrapalli lamproite, Nalgonda district, Telangana, India. 11th International Kimberlite Conference Extended Abstract No. 11IKC-4499, 2017
Italy
 
  • Liguria
    • La Spezia Province
      • Borghetto di Vara
Analyses of Anthony Kampf of Natural History museum of Los Angeles - U.S.A.; Balestra, C., Castellaro, F., Kampf, A.R., Vajda, E., and Esposito, M. (2020) La miniera di Cerchiara, Borghetto di Vara, Levante Ligure: recenti identificazioni e stato dell’arte. Micro, 18, 2-29 (in Italian).
Norway
 
  • Troms og Finnmark
    • Tromsø
      • Kvaløya
Zozulya, D.R., Savchenko, E. E., Kullerud, K.,Ravna, E. K. and L. M. Lyalina (2010) Unique accessory Ti-Ba-P mineralization in the Kvalöya ultrapotassic dike, Northern Norway. Geology of Ore Deposits 52, 843-851.
Russia
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
      • Murunskii Massif
Konev, A.A., Vorobyev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Russian).
  • Murmansk Oblast
    • Khibiny Massif
PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65.
  • Sakha Republic (Yakutia)
    • Mirninsky District
      • Daldyn
Rezvukhin, D.I.; Alifirova, T.A.; Golovin, A.V.; Korsakov, A.V. (2020) A Plethora of Epigenetic Minerals Reveals a Multistage Metasomatic Overprint of a Mantle Orthopyroxenite from the Udachnaya Kimberlite. Minerals 10, 264.
UK
 
  • England
    • Cornwall
      • Falmouth
Canadian Mineralogist, 41, 1329-1344 (2003); A. Hall (1982) The Pendennis Peralkaline Minette. Mineralogical Magazine 45:257-266.
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