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Ferri-holmquistite

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Formula:
◻{Li2}{Mg3Fe3+2}(Si8O22)(OH)2
The holmquistite group are orthorhombic amphiboles in the lithium amphibole subgroup.

Holmquistite is defined with Mg>Fe2+ and Fe3+ >Alin the C position
Hypothetical ortho-amphibole in the Holmquistite Root Name Group. It has not been found in nature.


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Unique IdentifiersHide

Mindat ID:
43515
Long-form identifier:
mindat:1:1:43515:0

Similar NamesHide

Ferro-holmquistiteA valid IMA mineral species◻Li2(Fe32+Al2)(Si8O22)(OH)2

Classification of Ferri-holmquistiteHide

Strunz-mindat (2026):
9.DD.05

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

Chemistry of Ferri-holmquistiteHide

Mindat Formula:
◻{Li2}{Mg3Fe3+2}(Si8O22)(OH)2

The holmquistite group are orthorhombic amphiboles in the lithium amphibole subgroup.

Holmquistite is defined with Mg>Fe2+ and Fe3+ >Alin the C position
Element Weights:
Element% weight
O47.454 %
Si27.767 %
Fe13.803 %
Mg9.011 %
Li1.716 %
H0.249 %

Calculated from ideal end-member formula.
Elements listed:
Fe, H, Li, Mg, O, Si - search for minerals with similar chemistry

Related Minerals - Strunz-mindat GroupingHide

9.DD.05Suenoite◻Mn2+2Mg5Si8O22(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Proto-ferro-anthophyllite◻Fe2+2Fe2+5(Si8O22)(OH)2Orth. mmm(2/m2/m2/m)
9.DD.05Proto-ferro-suenoite◻Mn2+2(Fe2+5)(Si8O22)(OH)2Orth. mmm(2/m2/m2/m)
9.DD.05PapikeiteNaMg2(Mg3Al2}(Al3Si5O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Gedrite◻Mg2(Mg3Al2)(Al2Si6O22)(OH)2Orth. mmm(2/m2/m2/m)
9.DD.05Holmquistite◻Li2(Mg3Al2)(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05'Sodic-anthophyllite'{Na}{Mg2}{Mg5}(AlSi7O22)(OH)2Orth.
9.DD.05'Sodic-ferro-anthophyllite'NaFe2+2Fe2+5(AlSi7O22)(OH)2Orth.
9.DD.05Ferro-papikeiteNaFe2+2(Fe2+3Al2)(Si5Al3O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Ferro-anthophyllite◻Fe2+2Fe2+5(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Proto-anthophyllite◻Mg2Mg5(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnnm
9.DD.05Ferro-gedrite◻Fe2+2(Fe2+3Al2)(Al2Si6O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Ferro-ferri-holmquistite◻Li2(Fe2+3Fe3+2)(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pmma
9.DD.05Ferro-holmquistite◻Li2(Fe2+3Al2)(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma
9.DD.05Anthophyllite◻Mg2Mg5(Si8O22)(OH)2Orth. mmm(2/m2/m2/m) : Pnma

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.

Internet Links for Ferri-holmquistiteHide

References for Ferri-holmquistiteHide

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