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Ferrisanidine

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Formula:
K[Fe3+Si3O8]
Colour:
colorless to white
Lustre:
Vitreous
Specific Gravity:
2.722 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Analogue of sanidine bearing Fe3+ instead of Al
The Fe3+ analogue of sanidine.


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Classification of FerrisanidineHide

Approved
Approval Year:
2019
First Published:
2019

Physical Properties of FerrisanidineHide

Vitreous
Transparency:
Transparent
Colour:
colorless to white
Streak:
white
Cleavage:
Perfect
Density:
2.722 g/cm3 (Calculated)

Optical Data of FerrisanidineHide

Type:
Biaxial (-)
RI values:
nα = 1.584(1) nβ = 1.595(1) nγ = 1.605(1)
2V:
Measured: 85° , Calculated: 86.5°
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
Not observed
Pleochroism:
Non-pleochroic
Comments:
Optical properties from synthetic material

Chemical Properties of FerrisanidineHide

Formula:
K[Fe3+Si3O8]

Crystallography of FerrisanidineHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 8.678(4) Å, b = 13.144(8) Å, c = 7.337(5) Å
β = 116.39(8)°
Ratio:
a:b:c = 0.66 : 1 : 0.558
Unit Cell V:
749.67 ų (Calculated from Unit Cell)
Z:
4

Occurrences of FerrisanidineHide

Paragenetic Mode(s):
•  Fumarolic

Type Occurrence of FerrisanidineHide

General Appearance of Type Material:
porous crusts composed by cavernous short prismatic crystals or irregular grains up to 10 μm × 20 μm
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, with catalogue number 96732.
Geological Setting of Type Material:
Fumerole
Associated Minerals at Type Locality:
Reference:
Shchipalkina, N.V.; Pekov, I.V.; Britvin, S.N.; Koshlyakova, N.N.; Vigasina, M.F.; Sidorov, E.G. (2019) A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals 9, 770.

Synonyms of FerrisanidineHide

Relationship of Ferrisanidine to other SpeciesHide

Member of:
Other Members of this group:
AlbiteNa(AlSi3O8)Tric. 1
AmazoniteK(AlSi3O8)
Andesine(Na,Ca)[Al(Si,Al)Si2O8]Tric.
AnorthiteCa(Al2Si2O8)Tric. 1 : P1
Anorthoclase(Na,K)AlSi3O8Tric.
BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
Buddingtonite(NH4)(AlSi3)O8Mon. 2 : P21
Bytownite(Ca,Na)[Al(Al,Si)Si2O8]Tric.
CelsianBa(Al2Si2O8)Mon. 2/m
DmisteinbergiteCa(Al2Si2O8)Trig. 3 2 : P3 1 2
FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m
HexacelsianBaAl2Si2O8Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
Hyalophane(K,Ba)[Al(Si,Al)Si2O8]Mon.
KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
MicroclineK(AlSi3O8)Tric. 1
Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
ParacelsianBa(Al2Si2O8)Mon.
ReedmergneriteNaBSi3O8Tric.
RubiclineRb(AlSi3O8)Tric.
SanidineK(AlSi3O8)Mon. 2/m : B2/m
SlawsoniteSr(Al2Si2O8)Mon.
StronalsiteNa2SrAl4Si4O16Orth.
SunstoneA variety of feldspar (microcline or oligoclase, more rarely labradorite) that has schiller, ...
SvyatoslaviteCa(Al2Si2O8)Orth.
Unnamed (New Ordered Member of the Alkali Feldspar Series)KNa(Si6Al2)O16Mon. m

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 FerrisanidineHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Shchipalkina, N.V., Pekov, I.V., Britvin, S.N., Koshlyakova, N.N., Vigasina, M.F., Sidorov, E.G. (2019): A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals: 9(12): 770
Shchipalkina, N.V., Pekov, I.V., Britvin, S.N., Koshlyakova, N.N., Vigasina, M.F. and Sidorov, E.G. (2019): Ferrisanidine, IMA 2019-052. CNMNC Newsletter No. 52; Mineralogical Magazine: 83; https://doi.org/10.1180/mgm.2019.73; http://forum.amiminerals.it/viewtopic.php?f=5&t=15946

Internet Links for FerrisanidineHide

Localities for FerrisanidineHide

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.
Russia (TL)
 
  • Kamchatka Krai
    • Tolbachik volcano
      • Great Fissure eruption (Main Fracture)
        • Northern Breakthrough (North Breach)
          • Second scoria cone
Shchipalkina, N.V.; Pekov, I.V.; Britvin, S.N.; Koshlyakova, N.N.; Vigasina, M.F.; Sidorov, E.G. (2019) A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals 9, 770.
Spain
 
  • Castile-La Mancha
    • Albacete
      • Hellín
Shchipalkina, N.V.; Pekov, I.V.; Britvin, S.N.; Koshlyakova, N.N.; Vigasina, M.F.; Sidorov, E.G. (2019) A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals 9, 770.
USA
 
  • Wyoming
    • Sweetwater Co.
Shchipalkina, N.V.; Pekov, I.V.; Britvin, S.N.; Koshlyakova, N.N.; Vigasina, M.F.; Sidorov, E.G. (2019) A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals 9, 770.
 
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