Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Clinoholmquistite

Formula:
[ ][Li
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
4
O
 
11
]
System:MonoclinicColour:Blue
Lustre:VitreousHardness:5 - 6
Name:Named for its relationship to holmquistite.


Amphibole Group. Mg-Fe-Mn-Li Clino-Amphibole Subgroup.

Originally reported from Tastyg Spodumene Deposit, Tuva Republic, Eastern-Siberian Region, Russia.

Classification of Clinoholmquistite

IMA status:Discredited 2004
Explanation of status:The approval of proposal IMA2004-002 implies the official discreditation of clinoholmquistite, as holotype material from the latter mineral was used for the description of the former, new mineral. Clinoholmquistite is now only a theoretical name in the amphibole nomenclature system.
Strunz 8th edition ID:8/F.07-70

8 : Silicates
F : Inosilicates (chain and band) double chains [Si2O6]4-
07 : Amphibole group, Magnesiocummingtonite - Ferroclinoholmquistite series
Dana 8th edition ID:66.1.1.6

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
1 : Amphiboles - Mg-Fe-Mn-Li subgroup
mindat.org URL:http://www.mindat.org/min-6881.html
Please feel free to link to this page.

Physical Properties of Clinoholmquistite

Lustre:Vitreous
Colour:Blue
Streak:nd.
Hardness (Mohs):5 - 6
Cleavage:Perfect
on {110}

Crystallography of Clinoholmquistite

Crystal System:Monoclinic
Cell Parameters:a = 9.8Å, b = 17.83Å, c = 5.3Å
β = 109.1°
Ratio:a:b:c = 0.55 : 1 : 0.297
Unit Cell Volume:V 875.11 ų (Calculated from Unit Cell)

Optical Data of Clinoholmquistite

Type:Biaxial (-)
RI values: nα = 1.610 nβ = 1.627 nγ = 1.633
2V:Measured: 55° to 61°, Calculated: 60°
Maximum Birefringence:δ = 0.023

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

Chemical Properties of Clinoholmquistite

Formula:
[ ][Li
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
4
O
 
11
]
Essential elements:Al, H, Li, Mg, O, Si
All elements listed in formula:Al, H, Li, Mg, O, Si
Common Impurities:Mn,Ca,Li,Na,K

Relationship of Clinoholmquistite to other Species

Related Minerals - Strunz Grouping):

- +
8/F.07-10Cummingtonite
[ ][Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-30Grunerite
[ ][Fe
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-40Manganocummingtonite
[ ][Mn
2+
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-50Manganogrunerite
[ ][Mn
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-60Permanganogrunerite
[ ][Mn
2+
2
][Mn
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-72Fluoro-clinoholmquistite
[ ][Li
 
2
][Mg
 
3
Al
 
2
][(F,OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-73Fluoro-sodic-clinoholmquistite
[ ][Na
 
2
][Mg
 
3
Al
 
2
][(F,OH)
 
2
|Si
 
4
O
 
11
]
8/F.07-75Clinoferroholmquistite
[ ][Li
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-80Ferri-clinoholmquistite
[ ][Li
 
2
][Mg
 
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-85Ferri-clinoferroholmquistite
[ ][Li
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
8/F.07-90Sodic-ferri-clinoferroholmquistite
[(☐,Na)][(Li,☐)
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]

Other Names for Clinoholmquistite

Synonyms:
Magnesioclinoholmquistite
Other Languages:
German:Clinoholmquistit
Magnesioclinoholmquistit
Russian:Клинохолмквистит
Spanish:Clinoholmquistita
Magnesioclinoholmquistita

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 Clinoholmquistite

Reference List:Mineralogical Record: 29: 169-174.

Internet Links for Clinoholmquistite

Search Engines:
  • Look for Clinoholmquistite on Google
  • Look for Clinoholmquistite images on Google
    • Mineral Dealers:
  • Buy Fine Minerals from mineralsweb.com
  • High-end worldwide specimens & outstanding customer service
  • The Arkenstone - Fine Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Wilensky Fine Minerals
  • Buy from David K Joyce minerals
  • Fabre Minerals - search for Clinoholmquistite specimens
  • Edwards Minerals - Fine Specimens
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Lapis Mineral Magazin
  • Find Clinoholmquistite on www.crystalclassics.co.uk
  • Buy Minerals and Crystals from Crystalarium.com
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Clinoholmquistite

    (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.
    Russia
     
    • Eastern-Siberian Region
      • Tuva Republic
    		Trans.Min.Mus.Acad.Sci.USSR (1965) 16, 73-80; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    AM 63 (1978), 1023; HB2/1 (1995); MM 61 (1997), 295
    Spain
     
    • Madrid
      • Sierra de Guadarrama
        • Eastern Pedriza Massif
    		AmMin 83:167-171 (1998)
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. Current server date and time: 13th Nov 2009 13:54:50