Holmquistite Root Name Group
A group of related mineral species
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About Holmquistite Root Name Group
Formula:
â—»{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.
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 Group.
Unique Identifiers
Mindat ID:
8958
Long-form identifier:
mindat:1:1:8958:2
GUID
(UUID V4):
(UUID V4):
3e2d2e37-af62-4230-bd88-c0cbf9645dd7
Chemistry of Holmquistite Root Name Group
Mindat Formula:
â—»{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.
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 Name Group
Crystal System:
Orthorhombic
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) |
|---|---|---|---|---|---|---|---|
| 0003813 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 |  | 2005 | 0 | 293 | |
| 0003814 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 | |
| 0003815 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 | |
| 0003816 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 | |
| 0003817 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 | |
| 0003818 | Holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 | |
| 0003812 | Ferro-holmquistite | Camara F, Oberti R (2005) The crystal-chemistry of holmquistites: Ferroholmquistite from Greenbushes (Western Australia) and hints for compositional constraints in B-Li amphiboles American Mineralogist 90 1167-1176 | | 2005 | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Holmquistite Root Name Group to other Species
Other Members of this group:
| Clino-holmquistite Root Name Group | â—»{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 | Mon. |
| Pedrizite Root Name Group | ALi2(LiZ2+2Z3+2)(Si8O22)(OH,F,Cl)2 |
Group Members:
| Ferro-ferri-holmquistite | â—»{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pmma |
| Ferro-holmquistite | â—»{Li2}{Fe2+3Al2}(Si8O22)(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
| Holmquistite | â—»{Li2}{Mg3Al2}(Si8O22)(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
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 Holmquistite Root Name Group
mindat.org URL:
https://www.mindat.org/min-8958.html
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Please feel free to link to this page.
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References for Holmquistite Root Name Group
Reference List:
(1913) Über Holmquistit, einen Lithionglaukophan von der Insel Utö. Sitzungsberichte der Heidelberger Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Klasse: Abteilung A, Mathematisch-physikalische Wissenschaften, Jahrgang 1913 23 doi:10.11588/diglit.37382#0001
Ishida, K., Hawthorne, F. C. (2003) Fine structure in the infrared OH-stretching bands of holmquistite and anthophyllite. Physics and Chemistry of Minerals, 30 (6). 330-336 doi:10.1007/s00269-003-0311-9
Spodumene prospect, Brandrücken, Frantschach-Sankt Gertraud, Wolfsberg District, Carinthia, Austria