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Holmquistite

Big Photo

Koktokay (Keketuohai) Pegmatite field, Fuyun Co., Aletai (Altay) Prefecture, Yili Hasake (Ili Kazakh) Autonomous Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China
© JSS

Show Holmquistite Photos (6)
Formula:
☐[Li
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
System:OrthorhombicColour:Black, dark-violet, ...
Lustre:VitreousHardness:5½
Name:For Per Johan Holmquist (1866-1946), petrologist from Stockholm, Sweden


Amphibole Group. Mg-Fe-Mn-Li Ortho-Amphibole Subgroup. Ferroholmquistite-Holmquistite Series.

Classification of Holmquistite

IMA status:Approved
Strunz 8th edition ID:8/F.12-20
Nickel-Strunz 10th (pending) edition ID:9.DD.05

9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
Dana 8th edition ID:66.1.2.9

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
1 : Amphiboles - Mg-Fe-Mn-Li subgroup
Hey's CIM Ref.:16.1.9

16 : Silicates Containing Aluminum and other Metals
1 : Aluminosilicates of Li
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Type Occurrence of Holmquistite

Type Locality:Utö Island, Haninge, Södermanland, Sweden
Year of Discovery:1913

Physical Properties of Holmquistite

Lustre:Vitreous
Colour:Black, dark-violet, light sky-blue.
Streak:White with sky-blue tinge.
Hardness (Mohs):5½

Crystallography of Holmquistite

Crystal System:Orthorhombic
Cell Parameters:a = 18.3Å, b = 17.69Å, c = 5.3Å
Ratio:a:b:c = 1.034 : 1 : 0.3
Unit Cell Volume:V 1,715.75 ų (Calculated from Unit Cell)

Optical Data of Holmquistite

Type:Biaxial (-)
RI values: nα = 1.613 - 1.625 nβ = 1.634 - 1.645 nγ = 1.646 - 1.666
2V:Measured: 49° , Calculated: 72° to 90°
Maximum Birefringence:δ = 0.033 - 0.041

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v strong

Chemical Properties of Holmquistite

Formula:
☐[Li
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
Essential elements:Al, H, Li, Mg, O, Si
All elements listed in formula:Al, H, Li, Mg, O, Si
Common Impurities:Ti,Mn,Ca,Na,K,F

Relationship of Holmquistite to other Species

Series:Forms a series with Ferroholmquistite (see here)
Related Minerals - Nickel-Strunz Grouping):
9.DD.05Anthophyllite
☐[Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Ferro-anthophyllite
☐[Fe
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Ferrogedrite
☐[Fe
2+
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DD.05Gedrite
☐[Mg
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DD.05Protoferro-anthophyllite
☐[Fe
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Protomangano-ferro-anthophyllite
☐[Mn
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Sodicanthophyllite
[Na][NaMg][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Sodic-ferro-anthophyllite
[Na][NaFe
2+
 
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Sodic-ferrogedrite
[Na][Fe
2+
2
][Fe
2+
4
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DD.05Sodicgedrite
[Na][Mg
 
2
][Mg
 
4
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DD.05Ferroholmquistite
☐[Li
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DD.05Protoanthophyllite
☐[Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
Related Minerals - Hey's Index Grouping:
16.1.1Petalite
LiAlSi
 
4
O
 
10
16.1.2Spodumene
LiAl[Si
 
2
O
 
6
]
16.1.3Eucryptite
LiAl[SiO
 
4
]
16.1.4Virgilite
LiAlSi
 
2
O
 
6
16.1.5Cookeite
LiAl
 
4
(Si
 
3
Al)O
 
10
(OH)
 
8
16.1.6Bikitaite
LiAlSi
 
2
O
 
6
·H
 
2
O
16.1.7Lunijianlaite
Li
 
0.7
Al
 
6.2
(Si
 
7
AlO
 
20
)(OH,O)
 
10
16.1.8Swinefordite
Li(Al,Li,Mg)
 
4
(Si,Al)
 
8
O
 
20
,(OH,F)
 
4
·xH
 
2
O
16.1.13Clinoferroholmquistite
[ ][Li
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
16.1.14Magnesioholmquistite
16.1.15Bityite
CaLiAl
 
2
[(OH)
 
2
|BeAlSi
 
2
O
 
10
]
16.1.16Sogdianite
(K,Na)
 
2
(Li,Fe)
 
3
(Zr,Ti,Fe)Si
 
12
O
 
30
16.1.17Sugilite
KNa
 
2
(Fe,Mn,Al)
 
2
Li
 
3
Si
 
12
O
 
30

Other Names for Holmquistite

Synonyms:
LithionglaukophanLithium-AmphiboleMagnesioholmquistite
German names:
Holmquistit
Russian names:
Холмквистит
Spanish names:
Holmquistita

Other Information

Health Warning: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

Reference List:Mineralogical Record: 29 (1998): 169-174.

Ishida, K. and Hawthorne, F.C. (2003). Fine structure in the infrared OH-stretching bands of holmquistite and anthophyllite. Physics and Chemistry of Minerals: 30: 330-336.

Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles: Canadian Mineralogist:
44(1): 1-21.

Internet Links for Holmquistite

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  • Raman and XRD data at RRUFF project
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  • Holmquistite details from Handbook of Mineralogy (PDF)
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    Localities for Holmquistite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Western Australia
      • Greenbushes Tinfield
    		Am Min 90:1167-1176
      • Mt Marion
    Austria
     
    • Carinthia
      • Koralpe Mts
        • Moschkogel Mt. - Weinebene area
          • Brandrücken
    		F. Walter (1992) Eur. Journ. Mineral. 4, 1275-1283; G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    Brazil
     
    • Southeast Region
      • Minas Gerais
        • Nazareno
    Canada
     
    • Manitoba
      • Lac-du-Bonnet area
        • Bernic Lake
    China
     
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Yili Hasake (Ili Kazakh) Autonomous Prefecture
        • Aletai (Altay) Prefecture
          • Fuyun Co.
    		http://www.smartminerals.com/cina2004/art_China_localities.htm
    Mozambique
     
    • Zambezia Province
      • Alto Ligonha District
    		No reference listed
    Norway
     
    • Vestfold
      • Larvik
        • Tjølling
    Russia
     
    • Eastern-Siberian Region
      • Tuva Republic
    		No reference listed
    Sweden
     
    • Södermanland
      • Haninge
    		Langhof, J., Holtstam, D. & Gustafsson, L., 2000: Chiavennite and zoned genthelvite-helvite as late-stage minerals of the Proterozoic LCT pegmatites at Utö, Stockholm, Sweden. GFF, Vol. 122 (Pt. 2, June), pp. 207-212. Stockholm. ISSN 1103-5897
    USA
     
    • Maine
      • Knox Co.
        • Rockport
    		King & Foord, 1994. Mineralogy of Maine, V.1, p.187.
    • New Mexico
      • Taos Co.
        • Picuris District
    		Min Rec 8:2 pp115-126 The Harding Mine Taos County New Mexico
    • North Carolina
    		Ref; American Mineralogist Vol ume 12 pages 305-307, 1927
    Jan H.Bernard and Jaroslav Hyrsl ,2004,Minerals and their Localities,pg.286
    Jan H. Bernard and Jaroslav Hyrsl,2004,Minerals and their Localities,pg.286
      • Cleveland Co.
        • Kings Mountain
    		Wilson,W.F and Mckenzie,B.J ,1978, Mineral Collecting Sites in North Carolina,Information Circular 24
        • Kings Mountain District
    		rruff.geo.arizona.edu/doclib/hom/holmquistite.pdf
      • Gaston Co.
        • Bessemer City
    		Forsyth Gem and Mineral Club
    MinMag 65:775-785
    • South Dakota
      • Pennington Co.
        • Keystone District
          • Keystone
    		AmMin 73:324 (1988)
    Zimbabwe
     
    • Mashonaland
      • Mtoko
    		http://www.minsocam.org/msa/Handbook/Holmquistite.PDF
    • Matabeleland South
      • Mweza Range (Wedja)
        • Sandawana-Belingwe District
    		Emeralds of the World English extraLapis Vol. 2 2002 pp24-35
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.