Dims: 2.65x1.79x1.46" (6.74x4.55x3.71cm)
Wt: 4.06oz (114.8g)
Pomarolli Mine, Divino das Laranjeiras, Minas erais, Brazil
This limonite "crystal" is a pseudomorph after siderite, and is accompanied by a large number of mica books, probably biotite. The limonite is opaque and a mottled brown in color, with a surprizingly good luster. The mica is brown and transparent in very thin sections (showing brown highlights).