Potassic-ferri-leakeite
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About Potassic-ferri-leakeite
Formula:
[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2
The Leakeite group minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
C(Al+Fe3++2Ti) > 1.5 apfu and
CLi > 0,5 apfu
Potassic-ferri-leakeite is defined with
A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
A(Na+K+2Ca)> 0.5 apfu,
C(Al+Fe3++2Ti) > 1.5 apfu and
CLi > 0,5 apfu
Potassic-ferri-leakeite is defined with
A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
Colour:
reddish brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.18 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
This mineral was first published as Potassicleakeite (Matsubara et,al 2002). The Leakeite group was redefined in the 2012 amphibole nomenclature and the mineral described by Matsubara et.al. is now named potassic-ferri-leakeite.
This page provides mineralogical data about Potassic-ferri-leakeite.
Classification of Potassic-ferri-leakeite
Approved
Approval year:
2001
8/F.08-86b
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
Physical Properties of Potassic-ferri-leakeite
Vitreous
Transparency:
Transparent
Colour:
reddish brown
Streak:
pale brownish yellow
Hardness:
5 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Perfect
on {110}
on {110}
Fracture:
Irregular/Uneven
Density:
3.18 g/cm3 (Calculated)
Optical Data of Potassic-ferri-leakeite
Type:
Biaxial (+)
RI values:
nα = 1.672 nβ = 1.680 nγ = 1.692
2V:
Calculated: 79°
Max Birefringence:
δ = 0.020

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
Pleochroism:
Visible
Comments:
X = yellowish brown, Y = pale brown, Z = reddish brown
Chemical Properties of Potassic-ferri-leakeite
Formula:
[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2
The Leakeite group minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
C(Al+Fe3++2Ti) > 1.5 apfu and
CLi > 0,5 apfu
Potassic-ferri-leakeite is defined with
A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
The Leakeite group minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
C(Al+Fe3++2Ti) > 1.5 apfu and
CLi > 0,5 apfu
Potassic-ferri-leakeite is defined with
A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: (OH) dominant
IMA Formula:
KNa2(Mg2Fe3+2Li)Si8O22(OH)2
Crystallography of Potassic-ferri-leakeite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 9.922 Å, b = 17.987 Å, c = 5.286 Å
β = 104.07°
β = 104.07°
Ratio:
a:b:c = 0.552 : 1 : 0.294
Unit Cell V:
915.1 ų
Z:
2
Type Occurrence of Potassic-ferri-leakeite
General Appearance of Type Material:
prismatic crystals, up to 2 mm long
Geological Setting of Type Material:
in pegmatite-like veinlets in a manganese ore deposit
Synonyms of Potassic-ferri-leakeite
Other Language Names for Potassic-ferri-leakeite
Relationship of Potassic-ferri-leakeite to other Species
Member of:
Other Members of this group:
Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 | Mon. 2/m : B2/m |
Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. |
Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 | Mon. |
Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. |
Ferro-fluoro-leakeite | NaNa2(Fe2+2Al2Li)(Si8O22)F2 | |
Ferro-leakeite | NaNa2(Fe2+2Al2Li)(Si8O22)(OH)2 | |
Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
Leakeite | NaNa2(Mg2Al2Li)(Si8O22)(OH)2 | |
Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 | Mon. 2/m : B2/m |
Potassic-leakeite | KNa2(Mg2Al2Li)(Si8O22)(OH)2 | |
Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Potassic-ferri-leakeite associated with Watatsumiite | Na2KLi(Mn2+,Fe2+)2V4+2[Si8O24] |
Related Minerals - Nickel-Strunz Grouping
9.DE. | Clino-suenoite | ◻{Mn2+2}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.05 | Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 | Mon. |
9.DE.05 | Clino-holmquistite Root Name Group | ◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 | Mon. |
9.DE.05 | Grunerite | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.05 | Permanganogrunerite | ◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2 | Mon. |
9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 | Mon. 2/m : B2/m |
9.DE.10 | Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2 | Mon. 2/m : B2/m |
9.DE.10 | Ferri-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
9.DE.10 | Ferro-actinolite | ◻Ca2Fe2+5(Si8O22)OH2 | Mon. |
9.DE.10 | Ferro-hornblende | ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2 | Mon. |
9.DE.10 | Ferro-tschermakite | ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 | Mon. |
9.DE.10 | Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 | Mon. 2/m : B2/m |
9.DE.10 | Tremolite | ◻{Ca2}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.10 | Tschermakite | ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 | Mon. |
9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 | Mon. |
9.DE.10 | Parvo-manganotremolite | ◻{CaMn2+}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.10 | Fluoro-tremolite | ◻{Ca2}{Mg5}(Si8O22)F2 | Mon. 2/m : B2/m |
9.DE.10 | Ferro-ferri-hornblende | ◻Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22OH2 | Mon. |
9.DE.15 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22OH2 | Mon. |
9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 | Mon. |
9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 | Mon. |
9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2 | Mon. |
9.DE.15 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 | Mon. |
9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 | Mon. |
9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 | Mon. |
9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 | Mon. 2/m : P2/m |
9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 | Mon. |
9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 | Mon. |
9.DE.15 | Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. |
9.DE.15 | Potassic-ferro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2 | Mon. |
9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-fluoro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-chloro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2 | Mon. 2/m : B2/m |
9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-ferro-chloro-edenite | KCa2Fe2+5(AlSi7O22)Cl2 | |
9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-ferro-pargasite | KCa2(Fe2+4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Chromio-pargasite | {Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 | Mon. 2/m : B2/m |
9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Barroisite | ◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 | Mon. |
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 | Mon. 2/m : B2/m |
9.DE.20 | Ferro-barroisite | ◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 | Mon. |
9.DE.20 | Ferro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2 | Mon. |
9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 | Mon. |
9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 | Mon. |
9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 | Mon. |
9.DE.20 | Richterite | {Na}{NaCa}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Winchite | ◻{CaNa}{Mg4Al}(Si8O22)(OH)2 | Mon. 2/m |
9.DE.20 | Taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 | Mon. 2/m |
9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 | Mon. |
9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Ferri-ghoseite | ◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 | Mon. 2/m |
9.DE.20 | Ferri-winchite | ◻(NaCa)(Mg4Fe3+)Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 | Mon. 2/m : B2/m |
9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 | Mon. |
9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 | Mon. 2/m : B2/m |
9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 | Mon. |
9.DE.25 | Ferro-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22(OH)2 | Mon. |
9.DE.25 | Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 | Mon. |
9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 | Mon. |
9.DE.25 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. |
9.DE.25 | Magnesio-riebeckite | ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 | Mon. |
9.DE.25 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Nybøite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Riebeckite | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 | Mon. |
9.DE.25 | Ferro-ferri-nybøite | NaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Clino-ferro-ferri-holmquistite | ◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Ferri-nybøite | NaNa2(Mg3Fe3+2](AlSi7O22)(OH)2 | Mon. |
9.DE.25 | Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. |
9.DE.25 | Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 | Mon. |
9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 | Mon. |
9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 | Mon. |
9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. |
9.DE.25 | Fluoro-nybøite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 | Mon. 2/m : B2/m |
9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
9.DE.25 | Potassic-arfvedsonite | [(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 | Mon. 2/m : B2/m |
9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] | Mon. 2/m : B2/m |
9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 | Mon. 2/m : B2/m |
9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 | Mon. 2/m : B2/m |
9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 | Mon. 2/m : B2/m |
9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 | Mon. 2/m : B2/m |
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.
References for Potassic-ferri-leakeite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
S. Matsubara. R. Miyawaki, M. Kurosawa & Y. Suzuki (2002) Potassicleakeite, a new amphibole from the Tanohata mine, Iwate Prefecture, Japan. Journal of Mineralogical and Petrological Sciences: 97: 177-184.
Grew, E.S., Pertsev, N.N., Roberts, A.C. (2003) New mineral names. American Mineralogist: 88: 1177.
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.
Internet Links for Potassic-ferri-leakeite
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https://www.mindat.org/min-11434.html
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Localities for Potassic-ferri-leakeite
Locality List




All localities listed without proper references should be considered as questionable.
Japan (TL) | |
| Matsubara, S., Miyawaki, R., Kurosawa, M., Suzuki, Y. (2002) Potassicleakeite, a New Amphibole from the Tanohata Mine, Iwate Prefecture, Japan. Journal of Mineralogical and Petrological Sciences: 97(4): 177-184. |
Russia | |
| Sergey Vasiliev specimen |
Tanohata mine, Tanohata-mura, Shimohei District, Iwate Prefecture, Japan