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Wodginite from
Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA

Locality type:Quarry
Classification
Species:Wodginite
Formula:Mn2+Sn4+Ta2O8
Comments:Fantastic tapered crystals, 2 to 6 cm long, translucent and sometimes showing a little iridescence. Typically in cleavelandite, associated with cassiterite, foitite grading into elbaite, gobbinsite and quartz. Long misidentified as cassiterite or tantalite-(Mn) and too bad as it was not "discovered" until 1963 in Canada and Australia. Strickland could have been the type locality had it been recognized as a new mineral when the quarry was active.

Schooner (circa 1985) summarizes its identification:

A decade ago, the author found a loose 4 inch mass of montebrasite, studded with sharply formed little dark brown crystals, on one of the Strickland quarry dumps. These were tentatively classified as manganotantalite, despite visual differences. The X-ray pattern was later rechecked, with wodginite in mind, and the fit was close enough to warrant a spectrographic test, which showed the presence of tin. Pete J. Dunn and Peter Cerny have since made probe studies of the material. The original mass was broken into several rich specimens. The wodginite is in equant crystals, transparent under magnification, with a few little tabular amber crystals of manganotantalite. This material obviously represented only part of a concentration of wodginite in montebrasite.

Several years ago, Bruce Jarnot encountered a small cleavelandite boulder, on the long narrow dump along the western edge of the hill, yielding maybe a dozen superb thumbnails of sharp, euhedral, reddish-black wodginite crystals, of a pyramidal aspect, up to almost an inch. These, too, were thought to be manganotantalite, until X-ray study proved them to be wodginite.

At that point, the author became suspicious of an iridescent brown mineral, embedded in columnar green elbaite, collected around 1950. The X-ray pattern shows it to be wodginite, in yet another habit. Obviously, the mineral has been mistaken for other things!
Habit:tapered, elongated prisms
Colour:dark brown
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
References
References:Jarnot, Bruce M. (2011): Letters: Connecticut Update. Rocks & Minerals: 86(4): 299.;
Jarnot, Bruce. (1989): Minerals New to the Portland Area Pegmatites of Central Connecticut. Abstract from the 16th Rochester Mineralogical Symposium April 7, 1989, in Rocks & Minerals: 64(12): 471.; Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy.
Associated Minerals Based on Photo Data:
Elbaite2 photos of Wodginite associated with Elbaite at this locality.
Cookeite2 photos of Wodginite associated with Cookeite at this locality.
Cassiterite1 photo of Wodginite associated with Cassiterite at this locality.
Data
Mineral Data:Click here to view Wodginite data
Locality Data:Click here to view Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
Photo GalleryView Gallery (2 photos)
Nearest other occurrences of Wodginite
3.0km (1.9 miles) Walden Gem Quarry, Portland, Middlesex Co., Connecticut, USA
 
Mineral and/or Locality  
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