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Holmquistite Root Name

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About Holmquistite Root NameHide

Formula:
☐{Li2}{Z2+3Z3+2}(Si8O22)(OH)2
The holmquistite minerals are orthorhombic amphiboles in the lithium amphibole subgroup.

The individual members of the group is defined by the dominant elements in the Z2+ and Z3+ (= IMA C2+ and C3+) positions.

The root-name species of the group, holmquistite is defined as the Mg and Al dominant member of the group.

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
Crystal System:
Orthorhombic
Name:
For Per Johan Holmquist (1866-1946), petrologist from Stockholm, Sweden
This page provides mineralogical data about Holmquistite Root Name.


Chemical Properties of Holmquistite Root NameHide

Formula:
☐{Li2}{Z2+3Z3+2}(Si8O22)(OH)2

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

The individual members of the group is defined by the dominant elements in the Z2+ and Z3+ (= IMA C2+ and C3+) positions.

The root-name species of the group, holmquistite is defined as the Mg and Al dominant member of the group.

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.

Crystallography of Holmquistite Root NameHide

Crystal System:
Orthorhombic

Relationship of Holmquistite Root Name to other SpeciesHide

Other Members of this group:
Clino-holmquistite Root Name☐{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
Clino-sodic-fluoro-holmquistite{Na}{Li2}{Mg4Al}(Si8O22)F2
Pedrizite Root NameALi2(LiZ2+2Z3+2)(Si8O22)(OH,F,Cl)2
Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon.
Group Members:
Ferri-holmquistite ☐{Li2}{Mg3Fe3+2}(Si8O22)(OH)2
Ferro-ferri-holmquistite ☐{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2
Ferro-holmquistite ☐{Li2}{Fe2+3Al2}(Si8O22)(OH)2Orth.
Holmquistite ☐{Li2}{Mg3Al2}(Si8O22)(OH)2Orth.

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 Holmquistite Root NameHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Osann, A. (1913) Über Holmquistit, einen Lithiumglaukophan von der Insel Utö. Sitzungsberichte der Heidelberger Akademie der Wissenschaften Jahrgang 1913. 23. Abhandlung
Vogt, T., Bastiansen, O., Skancke, P. (1958) Holmquistite as a rhombic amphibole. American Mineralogist: 43: 981-982.
Ishida, K., Hawthorne, F.C. (2003) Fine structure in the infrared OH-stretching bands of holmquistite and anthophyllite. Physics and Chemistry of Minerals: 30: 330-336.
Camara, F., Oberti, R. (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in BLi amphiboles. American Mineralogist: 90: 1167-1176.
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 Holmquistite Root NameHide

 
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