Potassic-ferro-pargasite
A valid IMA mineral species
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About Potassic-ferro-pargasite
Formula:
KCa2(Fe2+4Al)(Si6Al2)O22(OH)2
Potassic-ferro-pargasite is defined as a pargasite group member with the following dominant elements:
A position: K
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: OH as the dominant anion
A position: K
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: OH as the dominant anion
Colour:
black
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
3.34 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
For the mineral pargasite and its potassium and ferrous iron content.
Type Locality:
This page provides mineralogical data about Potassic-ferro-pargasite.
Unique Identifiers
Mindat ID:
35789
Long-form identifier:
mindat:1:1:35789:8
IMA Classification of Potassic-ferro-pargasite
Approved
IMA status notes:
Redefined by the IMA
Approval year:
2007
Approval history:
Redefined: IMA 2012 s.p.
Classification of Potassic-ferro-pargasite
9.DE.15
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 |
|---|---|---|
| Pfprg | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Potassic-ferro-pargasite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Potassic-ferro-pargasite
Vitreous
Transparency:
Translucent, Opaque
Colour:
Black
Hardness:
6 on Mohs scale
Hardness:
VHN100=858 - 1150 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
{110}
{110}
Fracture:
Irregular/Uneven
Density:
3.34 g/cm3 (Calculated)
Optical Data of Potassic-ferro-pargasite
Type:
Biaxial (-)
RI values:
nα = 1.680(2) nβ = 1.690 nγ = 1.698(2)
2V:
Measured: 80° to 90°
Max. Birefringence:
δ = 0.018
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
pale green to bluish green
Comments:
β calculated from 2V
Chemistry of Potassic-ferro-pargasite
Mindat Formula:
KCa2(Fe2+4Al)(Si6Al2)O22(OH)2
Potassic-ferro-pargasite is defined as a pargasite group member with the following dominant elements:
A position: K
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: OH as the dominant anion
Potassic-ferro-pargasite is defined as a pargasite group member with the following dominant elements:
A position: K
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: OH as the dominant anion
Element Weights:
Crystallography of Potassic-ferro-pargasite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.937(5) Å, b = 18.108(6) Å, c = 5.335(4) Å
Ratio:
a:b:c = 0.549 : 1 : 0.295
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0013137 | Potassic-ferro-pargasite | Banno Y, Miyawaki R, Matsubara S, Sato E, Nakai I, Matsuo G, Yamada S (2009) Potassic-ferropargasite, a new member of the amphibole group, from Kabutoichiba, Mie Prefecture, central Japan Journal of Mineralogical and Petrological Sciences 104 374-382 | 2009 | Kabutoichiba, Mie Prefecture, central Japan | 0 | 293 |
CIF Raw Data - click here to close
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Potassic-ferro-pargasite
General Appearance of Type Material:
Subhedral to anhedral crystals to 0.7mm.
Place of Conservation of Type Material:
National Museum of Nature and Science, Tokyo NMN M29296.
Geological Setting of Type Material:
Calcareous hornfels.
Associated Minerals at Type Locality:
Synonyms of Potassic-ferro-pargasite
Other Language Names for Potassic-ferro-pargasite
Japanese:カリ鉄パーガス閃石
Relationship of Potassic-ferro-pargasite to other Species
Member of:
Other Members of Pargasite Root Name Group:
| Chromio-pargasite | NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| Ferro-chloro-pargasite | NaCa2(Fe2+4Al)(Al2Si6O22)Cl2 | |
| Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| Mangani-pargasite | NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 | Mon. 2/m : B2/m |
| Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 | Mon. 2/m : B2/m |
Related Minerals - Strunz-mindat Grouping
| 9.DE. | Shojiite | Na(NaMg)Mg5Si8O22(OH)2 |
| 9.DE. | Clino-suenoite | ◻{Mn2+2}{Mg5}(Si8O22)(OH)2 |
| 9.DE. | Mangani-eckermannite | NaNa2(Mg4Mn3+)Si8O22(OH)2 |
| 9.DE.05 | Permanganogrunerite | ◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2 |
| 9.DE.05 | Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| 9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 |
| 9.DE.05 | Grunerite | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.05 | Clino-holmquistite Root Name Group | ◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 |
| 9.DE.10 | Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| 9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 |
| 9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 |
| 9.DE.10 | Clino-ferro-suenoite | ◻{Mn2+2}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.10 | Fluoro-tremolite | ◻Ca2Mg5(Si8O22)F2 |
| 9.DE.10 | Parvo-manganotremolite | ◻{CaMn2+}{Mg5}(Si8O22)(OH)2 |
| 9.DE.10 | Magnesio-ferri-hornblende | ◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2 |
| 9.DE.10 | Ferro-ferri-hornblende | ◻Ca2(Fe2+4Fe3+)(AlSi7O22)(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 | Ferro-fluoro-hornblende | ◻Ca2(Fe2+4Al)(AlSi7O22)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 | Magnesio-fluoro-hornblende | ◻Ca2(Mg4Al)(AlSi7O22)F2 |
| 9.DE.10 | Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| 9.DE.10 | Ferro-ferri-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 |
| 9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 |
| 9.DE.10 | Tschermakite | ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 |
| 9.DE.10 | Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(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.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 | Ferro-ferri-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 |
| 9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
| 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 | Unnamed (F-dominant analogue of Ferri-kaersutite) | (Na,K)Ca2[Mg3(Fe3+,Fe2+)Ti](Si6Al2O22)(F,O)2 |
| 9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22(OH)2 |
| 9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 |
| 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 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| 9.DE.15 | Ferro-chloro-pargasite | NaCa2(Fe2+4Al)(Al2Si6O22)Cl2 |
| 9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 |
| 9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 |
| 9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 |
| 9.DE.15 | Ferro-fluoro-edenite | NaCa2Fe2+5(AlSi7O22)F2 |
| 9.DE.15 | Mangani-pargasite | NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 |
| 9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
| 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 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22(OH)2 |
| 9.DE.15 | Oxo-magnesio-hastingsite | NaCa2(Mg3(Fe3+2-x,Tix))5(Si6Al2O22)O2 |
| 9.DE.15 | Potassic-hastingsite | KCa2(Fe2+4Fe3+)(Al2Si6O22)(OH)2 |
| 9.DE.15 | Fluoro-hastingsite | NaCa2(Fe2+4Fe3+)(Al2Si6O22)F2 |
| 9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 |
| 9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 |
| 9.DE.15 | Chromio-pargasite | NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
| 9.DE.20 | Ghoseite | ◻[Mn2+Na][Mg4Al]Si8O22(OH)2 |
| 9.DE.20 | Potassic-ferro-taramite | K{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2 |
| 9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 |
| 9.DE.20 | Barroisite | ◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 |
| 9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
| 9.DE.20 | Potassic-ferro-ferri-taramite | K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
| 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 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
| 9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 |
| 9.DE.20 | Ferri-ghoseite | ◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 |
| 9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 |
| 9.DE.20 | Ferro-ferri-fluoro-katophorite | Na(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2 |
| 9.DE.20 | Richterite | Na(NaCa)Mg5(Si8O22)(OH)2 |
| 9.DE.20 | Ferri-winchite | ◻(NaCa)(Mg4Fe3+)Si8O22(OH)2 |
| 9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 |
| 9.DE.20 | Hjalmarite | {Na}(NaMn}{Mg5}Si8O22(OH)2 |
| 9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Clinoferroholmquistite | ◻Li2[Fe2+3Al2]Si8O22(OH,F)2 |
| 9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Taramite | Na(CaNa)(Mg3Al2)(Al2Si6O22)(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 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferro-ferri-barroisite | ◻(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Potassic-ferro-ferri-katophorite | {K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Ferro-ferri-winchite | ◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 |
| 9.DE.20 | Winchite | ◻{CaNa}{Mg4Al}(Si8O22)(OH)2 |
| 9.DE.20 | Ferro-fluoro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)F2 |
| 9.DE.20 | Fluoro-winchite | ◻{CaNa}{Mg4Al}(Si8O22)F2 |
| 9.DE.20 | Ferro-fluoro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)F2 |
| 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 | 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 | Ferro-ferri-katophorite | Na(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
| 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)2 |
| 9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 |
| 9.DE.20 | Ferro-barroisite | ◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 |
| 9.DE.20 | Scandio-winchite | ◻(NaCa)(Mg4Sc)(Si8O22)(OH)2 |
| 9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Ferro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2 |
| 9.DE.25 | Clino-sodic-fluoro-holmquistite | {Na}{Li2}{Mg4Al}(Si8O22)F2 |
| 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 | Oxo-pargasite | NaCa2(Mg3(Al2-xTix))5(Si6Al2O22)O2 |
| 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 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 |
| 9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 |
| 9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Mangano-ferri-fluoro-leakeite | NaNa2(Mn2+2Fe3+2Li)[Si8O22]F2 |
| 9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 |
| 9.DE.25 | Riebeckite | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 |
| 9.DE.25 | Unnamed (Possible K-analogue of Ferri-obertiite) | KNa2((Mg,Fe,Na)3Fe3+(Ti,Fe))Si8O22(O,F)2 |
| 9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 |
| 9.DE.25 | Ferro-fluoro-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22F2 |
| 9.DE.25 | Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 |
| 9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 |
| 9.DE.25 | Nybøite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 |
| 9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
| 9.DE.25 | Potassic-arfvedsonite | [(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Potassic-mangano-mangani-ungarettiite | KNa2(Mn2+2Mn3+3)Si8O22O2 |
| 9.DE.25 | Potassic-jeanlouisite | K(NaCa)(Mg4Ti)Si8O22O2 |
| 9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| 9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 |
| 9.DE.25 | Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] |
| 9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
| 9.DE.25 | Scandio-fluoro-eckermannite | NaNa2(Mg4Sc)(Si8O22)F2 |
| 9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 |
| 9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 |
| 9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 |
| 9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Clino-fluoro-holmquistite | ◻{Li2}{Mg3Al2}(Si8O22)F2 |
| 9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 |
| 9.DE.25 | Magnesio-riebeckite | ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 |
| 9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Fluoro-nybøite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 |
| 9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 |
| 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 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 |
| 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-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22(OH)2 |
| 9.DE.25 | Ferro-fluoro-nybøite | NaNa2(Fe2+3Al2)(AlSi7O22)F2 |
| 9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 |
| 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 | Ferro-nybøite | NaNa2(Fe2+3Al2)(AlSi7)O22(OH)2 |
| 9.DE.25 | Clino-ferro-ferri-fluoro-holmquistite | ◻{Li2}{Fe2+3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 |
| 9.DE.25 | Clino-ferri-fluoro-holmquistite | ◻{Li2}{Mg3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Clino-ferro-fluoro-holmquistite | ◻{Li2}{Fe2+3Al2}(Si8O22)F2 |
Radioactivity
Radioactivity:
| Element | % Content | Activity (Bq/kg) | Radiation Type |
|---|---|---|---|
| Uranium (U) | 0.0000% | 0 | α, β, γ |
| Thorium (Th) | 0.0000% | 0 | α, β, γ |
| Potassium (K) | 3.9974% | 1,239 | β, γ |
For comparison:
- Banana: ~15 Bq per fruit
- Granite: 1,000–3,000 Bq/kg
- EU exemption limit: 10,000 Bq/kg
Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.
Interactive Simulator:
Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!
Activity: –
| Distance | Dose rate | Risk |
|---|---|---|
| 1 cm | ||
| 10 cm | ||
| 1 m |
The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).
D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield
Other Information
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-ferro-pargasite
mindat.org URL:
https://www.mindat.org/min-35789.html
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References for Potassic-ferro-pargasite
Reference List:
(n.d.) The Campania Province, Pontine Islands, and Mount Vulture. In Plio-Quaternary Volcanism in Italy. Springer-Verlag. p.129-171. doi:10.1007/3-540-29092-3_6
Mazdab, F. K. (2003) The diversity and occurrence of potassium-dominant amphiboles. The Canadian Mineralogist, 41 (6) 1329-1344 doi:10.2113/gscanmin.41.6.1329
Banno, Yasuyuki, Miyawaki, Ritsuro, Matsubara, Satoshi, Sato, Eriko, Nakai, Izumi, Matsuo, Gen-ichiro, Yamada, Shigeo (2009) Potassic-ferropargasite, a new member of the amphibole group, from Kabutoichiba, Mie Prefecture, central Japan. Journal of Mineralogical and Petrological Sciences, 104 (6) 374-382 doi:10.2465/jmps.090122
Localities for Potassic-ferro-pargasite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Antarctica | |
| [[1]] Shiraishi et al. (1994) +1 other reference |
Argentina | |
| Pagano et al. (2016) +2 other references |
Italy | |
| - (n.d.) +1 other reference |
Japan | |
| Sawaki (1989) +1 other reference |
| Banno et al. (2009) |
South America Plate | |
| Lima et al. (2024) |
| Lima et al. (2024) | |
| Lima et al. (2024) | |
| Lima et al. (2024) | |
| Lima et al. (2024) | |
| Lima et al. (2024) |
Spain | |
| Mazdab (2003) |
USA | |
| Craig et al. (2024) |
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Kabutoichiba, Kameyama City, Mie Prefecture, Japan