Potassic-arfvedsonite
A valid IMA mineral species
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About Potassic-arfvedsonite
Formula:
[(K,Na)][Na2][Fe2+4Fe3+]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-arfvedsonite is defined with
A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: (OH) dominant
Potassic-arfvedsonite is defined with
A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: (OH) dominant
Colour:
Black or dark blue-green
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
3.39
Crystal System:
Monoclinic
Member of:
Name:
The mineral was named as the potassium-dominant analogue of arfvedsonite.
Co-Type Localities:
ⓘ Potassic-Arfvedsonite occurrence, Pegmatite Valley, Lilleelv, Head of Kangerluarsuk, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland
ⓘ Hilairitovoye pegmatite, Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
ⓘ Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia
ⓘ Hilairitovoye pegmatite, Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
ⓘ Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia
This page provides mineralogical data about Potassic-arfvedsonite.
Unique Identifiers
Mindat ID:
27528
Long-form identifier:
mindat:1:1:27528:4
GUID
(UUID V4):
(UUID V4):
78ca8893-7f2f-48e0-9b79-328b10d73581
IMA Classification of Potassic-arfvedsonite
Classification of Potassic-arfvedsonite
9.DE.25
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Parf | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Potassic-arfvedsonite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Black or dark blue-green
Streak:
Pale blue
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect {110}.
Perfect {110}.
Fracture:
Splintery, Step-Like
Density:
3.39(2) g/cm3 (Measured) 3.43 g/cm3 (Calculated)
Optical Data of Potassic-arfvedsonite
Type:
Biaxial (-)
RI values:
nα = 1.683(2) nβ = 1.692(2) nγ = 1.699(2)
2V:
Measured: >60° , Calculated: 82°
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
Strong, r > v.
Optical Extinction:
Z = b, X ∧ c = 20(10)°, Y ∧ a = 30(10)°.
Pleochroism:
Strong
Comments:
X = dark blue-green, Y = gray-green, Z = pale green-gray to pale green-brown.
Comments:
Absorption: X ≥ Y > Z.
Chemistry of Potassic-arfvedsonite
Mindat Formula:
[(K,Na)][Na2][Fe2+4Fe3+]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-arfvedsonite is defined with
A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: (OH) dominant
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-arfvedsonite is defined with
A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: (OH) dominant
Chemical Analysis
Oxide wt%:
1 | 2 | 3 | 4 | |
---|---|---|---|---|
SiO2 | 49.48 % | 48.63 % | 52.82 % | 51.64 % |
TiO2 | 0.47 % | 0.43 % | 0.77 % | 0.74 % |
Al2O3 | 0.89 % | 0.58 % | 0.51 % | 0.58 % |
Fe2O3 | 2.26 % | 11.60 % | 8.50 % | 4.74 % |
FeO | 31.58 % | 24.69 % | 13.82 % | 17.53 % |
MnO | 2.04 % | 1.37 % | 3.26 % | 0.88 % |
MgO | 0.70 % | 0.04 % | 4.8 % | 7.79 % |
CaO | 1.02 % | 0.30 % | 0.09 % | 1.63 % |
Na2O | 6.93 % | 7.01 % | 7.65 % | 6.94 % |
K2O | 1.97 % | 3.29 % | 3.76 % | 3.41 % |
ZnO | % | 0.20 % | 0.11 % | 0.06 % |
F | % | 0.36 % | 1.21 % | 1.59 % |
Li2O | % | 0.45 % | 0.73 % | % |
H2O | % | 1.7 % | 1.38 % | 1.20 % |
O=F | % | -0.15 % | -0.51 % | -0.67 % |
Total: | 97.34 % | 100.5 % | 98.9 % | 98.06 % |
Empirical formulas:
Sample ID | Empirical Formula |
---|---|
2 | (K0.67Na0.22) 0.89(Na1.95Ca0.05) 2.00 (Fe2+ 3.29Fe3+ 1.26Li0.29Mn0.19Ti0.05Zn0.02Mg0.01) 5.11(Si7.76Fe3+ 0.13Al0.11) 8.00 O22[(OH) 1.81F0.18] 1.99 |
3 | (K0.73Na0.27) 1.00 (Na2.00Ca0.01) 2.01 (Fe2+ 1.77 Mg1.10Fe3+ 0.98Li0.45Mn0.42Ti0.09Zn0.01 Al0.09) 4.91Si8.09O22[(OH) 1.41F0.59] 2.00 |
4 | (K0.67Na0.33) 1.00 (Na1.74Ca0.27) 2.01 (Fe2+ 2.26 Mg1.79Fe3+ 0.55Mn0.25Ti0.09Zn0.01 Al0.05) 5.00(Si7.94 Al0.06) 8.00O22[(OH) 1.23F0.77] 2.00 |
Sample references:
Crystallography of Potassic-arfvedsonite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 10.002(2) Å, b = 18.054(3) Å, c = 5.319(1) Å
β = 103.9(3)°
β = 103.9(3)°
Ratio:
a:b:c = 0.554 : 1 : 0.295
Unit Cell V:
932.36 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
9.02 Å | (28) |
8.53 Å | (100) |
3.419 Å | (12) |
3.303 Å | (23) |
3.184 Å | (40) |
2.847 Å | (17) |
2.725 Å | (10) |
Comments:
From type description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
17 : Marine authigenic Hadean minerals (see also #24) | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks | |
36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Potassic-arfvedsonite
Co-Type Localities:
ⓘ Potassic-Arfvedsonite occurrence, Pegmatite Valley, Lilleelv, Head of Kangerluarsuk, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland
ⓘ Hilairitovoye pegmatite, Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
ⓘ Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia
ⓘ Hilairitovoye pegmatite, Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
ⓘ Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia
General Appearance of Type Material:
Euhedral, prismatic to acicular crystals from a few centimeters to 15 x 0.8 cm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, no. 3137/1 (Greenland) and 3137/2 (Lovozero).
Empirical Formula of Type Material:
(K0.67Na0.22) 0.89(Na1.95Ca0.05) 2.00 (Fe2+ 3.29Fe3+ 1.26Li0.29Mn0.19Ti0.05Zn0.02Mg0.01) 5.11(Si7.76Fe3+ 0.13Al0.11) 8.00 O22[(OH) 1.81F0.18] 1.99
Geological Setting of Type Material:
Agpaitic complexes.
Associated Minerals at Type Locality:
Synonyms of Potassic-arfvedsonite
Other Language Names for Potassic-arfvedsonite
Relationship of Potassic-arfvedsonite to other Species
Member of:
Other Members of this group:
Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
Fluoro-arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22F2 | |
Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 | Mon. 2/m : B2/m |
Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Potassic-arfvedsonite associated with Manaksite | KNaMnSi4O10 |
2 photos of Potassic-arfvedsonite associated with Ussingite | Na2AlSi3O8OH |
1 photo of Potassic-arfvedsonite associated with Villiaumite | NaF |
1 photo of Potassic-arfvedsonite associated with Natrosilite | Na2Si2O5 |
1 photo of Potassic-arfvedsonite associated with Sphalerite | ZnS |
1 photo of Potassic-arfvedsonite associated with Microcline | K(AlSi3O8) |
1 photo of Potassic-arfvedsonite associated with Sodalite | Na4(Si3Al3)O12Cl |
Related Minerals - Strunz-mindat Grouping
9.DE. | Clino-suenoite | ◻{Mn2+2}{Mg5}(Si8O22)(OH)2 |
9.DE. | Scandio-winchite | ◻(NaCa)(Mg4Sc)(Si8O22)(OH)2 |
9.DE. | Mangani-eckermannite | NaNa2(Mg4Mn3+)Si8O22(OH)2 |
9.DE.05 | Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
9.DE.05 | Clino-holmquistite Root Name Group | ◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 |
9.DE.05 | Grunerite | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
9.DE.05 | Permanganogrunerite | ◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2 |
9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 |
9.DE.10 | Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
9.DE.10 | Ferro-ferri-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 |
9.DE.10 | Ferri-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 |
9.DE.10 | Ferro-actinolite | ◻Ca2Fe2+5(Si8O22)(OH)2 |
9.DE.10 | Ferro-hornblende | ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2 |
9.DE.10 | Ferro-tschermakite | ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2 |
9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 |
9.DE.10 | Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
9.DE.10 | Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
9.DE.10 | Tschermakite | ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 |
9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 |
9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 |
9.DE.10 | Parvo-manganotremolite | ◻{CaMn2+}{Mg5}(Si8O22)(OH)2 |
9.DE.10 | Fluoro-tremolite | ◻Ca2Mg5(Si8O22)F2 |
9.DE.10 | Magnesio-fluoro-hornblende | ◻Ca2Mg5(AlSi7O22)F2 |
9.DE.10 | Ferro-fluoro-hornblende | ◻Ca2(Fe2+4Al)(AlSi7O22)F2 |
9.DE.10 | Ferro-ferri-hornblende | ◻Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2 |
9.DE.10 | Magnesio-ferri-hornblende | ◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2 |
9.DE.10 | Ferro-cannilloite | CaCa2(Fe2+4Al)(Si5Al3O22)OH2 |
9.DE.10 | Ferro-ferri-cannilloite | CaCa2(Fe2+4Fe3+)(Si5Al3O22)OH2 |
9.DE.10 | Ferro-fluoro-actinolite | ◻{Ca2}{Fe5}(Si8O22)F2 |
9.DE.10 | Magnesio-ferri-fluoro-hornblende | ◻Ca2(Mg4Fe3+)(AlSi7O22)F2 |
9.DE.10 | Ferro-ferri-fluoro-hornblende | ◻Ca2(Fe2+4Fe3+)(AlSi7O22)F2 |
9.DE.10 | Ferri-fluoro-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2 |
9.DE.10 | Ferro-ferri-fluoro-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2 |
9.DE.10 | Ferro-fluoro-tschermakite | ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)F2 |
9.DE.10 | Fluoro-tschermakite | ◻{Ca2}{Mg3Al2}(Al2Si6O22)F2 |
9.DE.10 | Clino-ferro-suenoite | ◻{Mn2+2}{Fe2+5}(Si8O22)(OH)2 |
9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22(OH)2 |
9.DE.15 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22(OH)2 |
9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 |
9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 |
9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 |
9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferro-ferri-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-ferro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
9.DE.15 | Ferro-chloro-pargasite | NaCa2(Fe2+4Al)(Al2Si6O22)Cl2 |
9.DE.15 | Potassic-fluoro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22F2 |
9.DE.15 | Potassic-chloro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2 |
9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 |
9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 |
9.DE.15 | Fluoro-hastingsite | NaCa2(Fe2+4Fe3+)(Al2Si6O22)F2 |
9.DE.15 | Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 |
9.DE.15 | Ferro-fluoro-pargasite | (Na)(Ca2)(Fe2+4Al)(Al2Si6O22)F2 |
9.DE.15 | Potassic-ferro-chloro-edenite | KCa2Fe2+5(AlSi7O22)Cl2 |
9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-ferro-pargasite | KCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-hastingsite | KCa2(Fe2+4Fe3+)(Al2Si6O22)(OH)2 |
9.DE.15 | Chromio-pargasite | NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 |
9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 |
9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 |
9.DE.15 | Ferro-fluoro-edenite | NaCa2Fe2+5(AlSi7O22)F2 |
9.DE.15 | Ferri-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferro-sadanagaite | {Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2 |
9.DE.15 | Ferri-fluoro-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)F2 |
9.DE.15 | Ferro-ferri-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)F2 |
9.DE.15 | Ferro-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Al2}(Al3Si5O22)F2 |
9.DE.15 | Fluoro-sadanagaite | {Na}{Ca2}{Mg3Al2}(Al3Si5O22)F2 |
9.DE.15 | Potassic-chloro-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)Cl2 |
9.DE.15 | Potassic-ferro-chloro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)Cl2 |
9.DE.15 | Oxo-magnesio-hastingsite | NaCa2(Mg3(Fe3+2-x,Tix))5(Si6Al2O22)O2 |
9.DE.15 | Unnamed (F-dominant analogue of Ferri-kaersutite) | (Na,K)Ca2[Mg3(Fe3+,Fe2+)Ti](Si6Al2O22)(F,O)2 |
9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 |
9.DE.15 | Mangani-pargasite | NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2 |
9.DE.20 | Potassic-ferro-ferri-katophorite | {K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2 |
9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 |
9.DE.20 | Barroisite | ◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-barroisite | ◻(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-winchite | ◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 |
9.DE.20 | Ferri-barroisite | ◻(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-ferri-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Ferro-ferri-katophorite | Na(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
9.DE.20 | Ferro-barroisite | ◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 |
9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 |
9.DE.20 | Ferro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2 |
9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 |
9.DE.20 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 |
9.DE.20 | Richterite | Na(NaCa)Mg5(Si8O22)(OH)2 |
9.DE.20 | Winchite | ◻{CaNa}{Mg4Al}(Si8O22)(OH)2 |
9.DE.20 | Taramite | Na(CaNa)(Mg3Al2)(Al2Si6O22)(OH)2 |
9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 |
9.DE.20 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 |
9.DE.20 | Potassic-fluoro-katophorite | K(CaNa)(Mg4Al)(AlSi7O22)F2 |
9.DE.20 | Ferro-fluoro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-katophorite | Na(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2 |
9.DE.20 | Ferri-ghoseite | ◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 |
9.DE.20 | Ferri-winchite | ◻(NaCa)(Mg4Fe3+)Si8O22(OH)2 |
9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 |
9.DE.20 | Ferro-fluoro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)F2 |
9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 |
9.DE.20 | Potassic-ferri-katophorite | K(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
9.DE.20 | Potassic-ferro-richterite | {K}{CaNa}{Fe2+5}Si8O22(OH)2 |
9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 |
9.DE.20 | Potassic-ferro-taramite | K{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2 |
9.DE.20 | Fluoro-winchite | ◻{CaNa}{Mg4Al}(Si8O22)F2 |
9.DE.20 | Ferro-fluoro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)F2 |
9.DE.20 | Ferri-fluoro-barroisite | ◻{CaNa}{Mg3Fe3+2}(AlSi7O22)F2 |
9.DE.20 | Ferro-fluoro-barroisite | ◻{CaNa}{Fe2+3Al2}(AlSi7O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-barroisite | ◻{CaNa}{Fe2+3Fe3+2}(AlSi7O22)F2 |
9.DE.20 | Fluoro-barroisite | ◻{CaNa}{Mg3Al2}(AlSi7O22)F2 |
9.DE.20 | Ferri-fluoro-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2 |
9.DE.20 | Ferro-ferri-fluoro-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2 |
9.DE.20 | Ferro-fluoro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)F2 |
9.DE.20 | Potassic-ferri-taramite | K(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH) |
9.DE.20 | Ghoseite | ◻[Mn2+Na][Mg4Al]Si8O22(OH)2 |
9.DE.20 | Potassic-ferro-ferri-taramite | K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
9.DE.20 | Clinoferroholmquistite | ◻Li2[Fe2+3Al2]Si8O22(OH,F)2 |
9.DE.20 | Hjalmarite | {Na}(NaMn}{Mg5}Si8O22(OH)2 |
9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 |
9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 |
9.DE.25 | Ferro-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22(OH)2 |
9.DE.25 | Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 |
9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 |
9.DE.25 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Magnesio-riebeckite | ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 |
9.DE.25 | Nybøite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 |
9.DE.25 | Riebeckite | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 |
9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 |
9.DE.25 | Ferro-ferri-nybøite | NaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2 |
9.DE.25 | Clino-ferro-ferri-holmquistite | ◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Ferri-nybøite | NaNa2(Mg3Fe3+2](AlSi7O22)(OH)2 |
9.DE.25 | Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 |
9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 |
9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Fluoro-nybøite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 |
9.DE.25 | Mangano-ferri-fluoro-leakeite | NaNa2(Mn2+2Fe3+2Li)[Si8O22]F2 |
9.DE.25 | Clino-fluoro-holmquistite | ◻{Li2}{Mg3Al2}(Si8O22)F2 |
9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 |
9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 |
9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
9.DE.25 | Ferro-nybøite | NaNa2(Fe2+3Al2)(AlSi7)O22(OH)2 |
9.DE.25 | Clino-sodic-fluoro-holmquistite | {Na}{Li2}{Mg4Al}(Si8O22)F2 |
9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] |
9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 |
9.DE.25 | Ferro-fluoro-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22F2 |
9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 |
9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 |
9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 |
9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 |
9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 |
9.DE.25 | Fluoro-glaucophane | ◻[Na2][Mg3Al2]Si8O22F2 |
9.DE.25 | Fluoro-riebeckite | ◻{Na2}{Fe2+3Fe3+2}(Si8O22)F2 |
9.DE.25 | Magnesio-fluoro-riebeckite | ◻{Na2}{Mg3Fe3+2}(Si8O22)F2 |
9.DE.25 | Fluoro-eckermannite | NaNa2(Mg4Al}Si8O22F2 |
9.DE.25 | Ferro-fluoro-eckermannite | NaNa2(Fe2+4Al}Si8O22F2 |
9.DE.25 | Fluoro-arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22F2 |
9.DE.25 | Ferri-fluoro-nybøite | NaNa2(Mg3Fe3+2)(AlSi7O22)F2 |
9.DE.25 | Ferro-ferri-fluoro-nybøite | NaNa2(Fe2+3Fe3+2)(AlSi7O22)F2 |
9.DE.25 | Ferro-fluoro-nybøite | NaNa2(Fe2+3Al2)(AlSi7O22)F2 |
9.DE.25 | Ferro-leakeite | NaNa2(Fe2+2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Leakeite | NaNa2(Mg2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Potassic-leakeite | KNa2(Mg2Al2Li)(Si8O22)(OH)2 |
9.DE.25 | Ferri-fluoro-pedrizite | NaLi2(LiMg2Fe3+2)(Si8O22)F2 |
9.DE.25 | Ferro-ferri-fluoro-pedrizite | NaLi2(LiFe2+2Fe3+2)(Si8O22)F2 |
9.DE.25 | Clino-ferro-ferri-fluoro-holmquistite | ◻{Li2}{Fe2+3Fe3+2}(Si8O22)F2 |
9.DE.25 | Clino-ferri-fluoro-holmquistite | ◻{Li2}{Mg3Fe3+2}(Si8O22)F2 |
9.DE.25 | Clino-ferro-fluoro-holmquistite | ◻{Li2}{Fe2+3Al2}(Si8O22)F2 |
9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 |
9.DE.25 | Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 |
9.DE.25 | Oxo-pargasite | NaCa2(Mg3(Al2-x,Tix))5(Si6Al2O22)O2 |
9.DE.25 | Unnamed (Possible K-analogue of Ferri-obertiite) | KNa2((Mg,Fe,Na)3Fe3+(Ti,Fe))Si8O22(O,F)2 |
9.DE.25 | Potassic-mangano-mangani-ungarettiite | KNa2(Mn2+2Mn3+3)Si8O22O2 |
9.DE.25 | Potassic-jeanlouisite | K(NaCa)(Mg4Ti)Si8O22O2 |
Other Information
IR Spectrum:
The IR spectrum contains bands (sh = shoulder) at (cm-1) 3700, 3675, 1134, 1076, 1025 sh, 990 sh, 957, 900 sh, 741, 692, 661, 643, 520 sh, 491, 445 and 430 sh.
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 Potassic-arfvedsonite
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References for Potassic-arfvedsonite
Reference List:
Pekov, I.V., Chukanov, N.V., Lebedeva, Yu. S., Pushcharovsky, D. Yu., Ferraris, G., Gula, A., Zadov, A.E., Novakova, A.A., Petersen, O.V. (2004) Potassicarfvedsonite, KNa2 Fe2+4Fe3+Si8O22(OH)2, a K-dominant amphibole of the arfvedsonite series from agpaitic pegmatites – Mineral data, structure refinement and disorder in the A site. Neues Jahrbuch für Mineralogie - Monatshefte, 2004 (12) 555-574 doi:10.1127/0028-3649/2004/2004-0555
Lebedeva, Yu. S., Pushcharovsky, D. Yu., Pekov, I. V., Ferraris, G., Novakova, A. A., Gula, A. (2004) Cation ordering in the new Fe-rich amphibole potassicarfvedsonite. Acta Crystallographica Section A Foundations of Crystallography, 60. doi:10.1107/s0108767304096126
Localities for Potassic-arfvedsonite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Canada | |
| Mitchell et al. (2015) |
RRUFF database U of Arizona +1 other reference | |
| Hogarth (1997) |
Greenland | |
| Bradshaw (1988) +1 other reference |
| Pekov et al. (2004) |
India | |
| Kaur et al. (2017) |
Kaur et al. (2016) | |
Russia | |
| Konopleva et al. (2008) |
| Pekov et al. (2004) +1 other reference |
Konopleva et al. (2008) | |
Konopleva et al. (2008) | |
Konopleva et al. (2008) | |
| Pekov et al. (2004) +1 other reference |
Arzamastseva et al. (1999) +1 other reference | |
| Victor V. Sharygin analytycal data (2012) |
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Palitra pegmatite, Karnasurt mine, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia