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|Defined as a an amphibole in the cannilloite group of the Calcium subgroup with Mg>Fe2+ and Al>Fe3+ in the C position and with F as the dominant anion in the W position|
|Cannilloite group > Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup|
|Name:||In allusion to its composition, with FLUORine dominant over hydroxyl and its relationship to Cannilloite.|
Originally, the mineral was named "cannilloite," but the type material was found to be fluorine-dominant (F>OH) and it was renamed as stated.
Note that the "fluor-cannilloites" from Luc Yen, Vietnam, are pargasite (see http://www.mindat.org/mesg-7-198029.html).
Closely related to Pargasite.
Classification of Fluor-cannilloite
|IMA status:||Approved 1996|
|Strunz 8th edition ID:||8/F.10-105|
|Nickel-Strunz 10th (pending) edition ID:||9.DE.10|
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
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Type Occurrence of Fluor-cannilloite
|Type Locality:||Pargas (Parainen), Southwestern Finland Region, Finland|
|General Appearance of Type Material:||Fluor-cannilloite is gray-green and semitranslucent with a vitreous luster; it has a grayish white streak and shows|
no fluorescence under long-wave or short-wave ultraviolet light. It occurs as isolated anhedral grains and small granular aggregates up to
Physical Properties of Fluor-cannilloite
Crystallography of Fluor-cannilloite
Optical Data of Fluor-cannilloite
|RI values:||nα = 1.611 nβ = 1.616 nγ = 1.633|
|Maximum Birefringence:||δ = 0.022|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Fluor-cannilloite
Defined as a an amphibole in the cannilloite group of the Calcium subgroup with Mg>Fe2+ and Al>Fe3+ in the C position and with F as the dominant anion in the W position
|Essential elements:||Al, Ca, F, Mg, O, Si|
|All elements listed in formula:||Al, Ca, F, H, Mg, O, Si|
Relationship of Fluor-cannilloite to other Species
|Member of:||Cannilloite group > Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
Other Names for Fluor-cannilloite
|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 Fluor-cannilloite
Hawthorne F.C., Oberti R., Ungaretti L., Grice J.D. (1996): A new hyper-calcic amphibole with Ca at the A site: Fluor-cannilloite from Pargas, Finland American Mineralogist, 81, 995-1002.
Mineralogical Record: 28: 142.
Mineralogical Record: 29: 169-174.
Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048
Internet Links for Fluor-cannilloite
Localities for Fluor-cannilloite
(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.
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Locality Updated: Gatch Quarry (Gatch Crushed Stone Company Inc.), Harford Co., Maryland, USAFrom Bruce Wayne Osborne, 6th Dec 2013 03:45:19