Wodginite
{{Short description|Mineral}}
{{Infobox mineral
| name = Wodginite
| category = Oxide - Tantalate mineral
| boxwidth =
| boxbgcolor =
| image = Cassiterite-Wodginite-md36b.jpg
| imagesize =
| alt =
| caption = Wodginite over cassiterite
| formula = {{chem2|Mn(2+)(Sn,Ta)Ta2O8}}
| molweight =
| strunz = 4.DB.40
| dana = 08.01.08.01
| system = Monoclinic
| class = Prismatic (2/m)
(same H-M symbol)
| symmetry = C2/c (no. 15)
| color = Reddish brown, dark brown to black
| colour =
| habit = Flattened dipyramidal to prismatic crystals in radiating groups; granular, massive.
| twinning = Very common as penetration twins
| cleavage = none
| fracture = Irregular
| tenacity = Brittle
| mohs = 5.5
| luster = Sub-metallic
| streak = Brown
| diaphaneity = Opaque, translucent in thin fragments
| gravity = 7.19–7.36
| density =
| polish =
| opticalprop =
| refractive =
| birefringence =
| pleochroism =
| 2V =
| dispersion =
| extinction =
| length fast/slow =
| fluorescence=
| absorption =
| melt =
| fusibility =
| diagnostic =
| solubility =
| other =
| alteration =
| references = [http://rruff.geo.arizona.edu/doclib/hom/wodginite.pdf Handbook of Mineralogy][http://webmineral.com/data/Wodginite.shtml Webmineral data][http://www.mindat.org/min-4302.html Mindat.org]{{cite journal |last1=Ercit |first1=T.S. |last2=Hawthorne |first2=F.C. |last3=Cerny |first3=P.|journal=The Canadian Mineralogist |volume=30 |year=1992 |pages=597–611 |title=The wodginite group. I. Structural crystallography |url=https://www.researchgate.net/publication/269707385 |access-date=31 December 2020}}
}}
Wodginite is a manganese, tin, tantalum oxide mineral with the chemical formula {{chem2|Mn(2+)(Sn,Ta)Ta2O8}}. It may also include significant amounts of niobium.
Background
Wodginite was first described in 1963 for an occurrence in the Wodgina pegmatite, Wodgina, Pilbara Region, Western Australia.
Typical occurrence of wodginite occurs in zoned pegmatites in amphibolite. It is associated with tantalite, albite, quartz, muscovite, tapiolite,
microlite and microcline.
It occurs in pegmatites in a wide variety of locations. The most studied is the Tanco pegmatite in Manitoba, Canada; also in Red Lake, Ontario. It is reported from the Strickland quarry, Portland, Middlesex County, Connecticut; the Herbb #2 pegmatite, Powhatan County, Virginia; the McAllister mine, Rockford, Coosa County, Alabama; the Peerless mine, Pennington County, South Dakota. Also from Paraíba and Minas Gerais, Brazil; Krasonice, Czech Republic; Orivesi, Finland; Kalba, eastern Kazakhstan; Ankole, Uganda; Miami district, Zimbabwe and
File:Ixiolite columbite group (tantalite) wodginite crystal superstructure.svg group (including tantalite) and wodginite can be seen as a superstructure of ixiolite.{{cite journal|last=Ercit|first=T. S.|author2=Hawthorne, F. |author3=Cerny, P. |title=The wodginite group: I. structural crystallography|journal=Canadian Mineralogist|year=1992|volume=30|pages=597–611}}]]
References
{{Commons category}}
{{Reflist}}
- {{Cite journal |last1=Nickel |first1=E H |last2=Rowland |first2=J F |last3=McAdam |first3=R C |year=1963 |title=Wodginite - A new tin-manganese tantalate from Wodgina, Australia and Bernic lake, Manitoba |journal=The Canadian Mineralogist |volume=7 |pages=390–402 |authorlink=Ernest Henry Nickel |url=http://rruff.info/rruff_1.0/uploads/CM7_390.pdf }}
Category:Minerals in space group 15
Category:Minerals described in 1963
{{oxide-mineral-stub}}