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Foitite from USA
N9Y-WN1Foitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) , Elbaite Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Dimensions: 3.1 cm x 2.1 cm x 2.6 cm
Terminated tourmaline crystal with thin outer surficial zone of black foitite on olive-brown zone of elbaite with internal aqua-blue zone of elbaite series tourmaline. The zoned view of the crystal is polished. The tan coloration may be tourmaline or included material. Although this kind of material was found in the Gary Freeman era of mining, this crystal was obtained in the 1980's and presumably was found in the Hamlin-Merrill era of mining, probably in 1903-1905. EDS Excalibur Minerals
8WA-151Foitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
A 5.5 cm long section of a 2.5 cm wide foitite crystal. Electron microprobe analyses of the brittle crystals from this locality (Phys Chem Minerals 14, p163) show that they are foitite.
VJK-91VFoitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Field of View: 2 cm
Gray to slightly greenish-gray foitite crystals broken in typical fashion of tectonically disturbed rock. Associated with darker gray galena, white calcite, and white andesine.
XWF-F30Foitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Dimensions: 132.3 mm x 4.2 mm x 3.3 mm
This amazing foitite tourmaline pencil measures 132.3 x 4.2 x 3.3 mm and weighs 4.32g. It is doubly-terminated and has NO repairs! Collected by Ken Gochenour in 1994; it still has his label (with foitite misspelled).
6X0-NUFFoitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Foitite, purple transparent 1 mm crystal in muscovite.
6DV-11RFoitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) , Elbaite Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Dimensions: 18 cm x 8 cm x 10 cm
Doubly-terminated foitite with blue elbaite overgrowth, former Bruce Jarnot specimen - analyzed by John Attard. Former Earle Sullivan collection, 1962. Anthony J. Albini collection. Harold Moritz photo.
RJ1-WQ1Foitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Fibrous band of foitite. Harvard Museum no. 134242. Label is about 7 cm across. P. Cristofono photo.
CFY-694Foitite ? ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
RRUFF Project Specimen ID: R050495
Locality: Coahuila Mountain, California, USA
Source: California Institute of Technology W-20793
Bluish black prismatic fragment
3Q9-J14Foitite ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Dimensions: 6 inches x 5 inches x 5 inches
New Mexico Bureau of Geology Mineral Museum no. 15252.
LJM-JLCFoitite ? ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) , Tourmaline AD3G6(T6O18)(BO3)3X3Z , Albite Na(AlSi3O8)
Field of View: 5 mm
Largest Crystal Size: 3 mm
Black/dark brown Foitite in top part of tourmaline just before tourmaline turns into strands from Emmons Quarry. Optical Id and photograph by Lloyd W. Alexander and optically confirmed by A. Falster.