Dims: 3.5 x 2.1 x 2.4" (8.9 x 7.9 x 6.1 cm)
Wt: 8.7 oz. (246 g)
Faraday Mine, Bancroft, Ontario, Canada
Five Uranophane sprays rest on the base of this cabinet piece. Three of the sprays contain crystals that reach lengths of 0.2-0.3", and the other two have crystals that reach 0.4". All appear to be in good condition, though one of the larger sprays is exposed and shows some obvious damage. The Uranophane needles are too fine to study without magnification, but likely have good monoclinic form. Their bright yellow color is slightly rust-stained, but standard for the specie, as is their silky luster. The base on which they rest is somewhat difficult to define, but appears to be encrusted with reniform goethite or a related oxide mineral, hence the rust-staining. Tiny crystals of what I believe is calcite are scattered among the goethite.