Ludwigite
Alta Stock, Salt Lake County, Utah, USA
8.9 x 6.1 x 3.8 cm. Ludwigite is a rare magnesium, iron borate and this old-time specimen is nearly solid ludwigite with just a bit of matrix. Radial aggregates of lustrous, black, metallic, acicular ludwigite crystals cover all surfaces on this piece. This is extremely uncommon material from the Alta Stock of Utah. Highly representative of the ...
© Rob Lavinsky & irocks.com