HEMATITE
Specimen hem-21
$ 30.00Dims: 2.4" x 2.1" x 1.4" (6.1 x 5.4 x 3.6 cm)
Wt: 5.98 oz. (169.4 g)
Chihuahua, Mexico
This specimen consists entirely of part of a botryoidal crust of Hematite nodules of the variety sometimes called kidney ore. These nodules are heavily intergrown, so determining their mean size is difficult. However, they have excellent form and have been polished to accentuate their detail. All have a dark gray coloration and a dull metallic luster. Areas of their cross-section show a densely compact and finely fibrous, radiating pattern (see the close-up image). The underside of the specimen shows an irregular, amorphous surface that is slightly coated with a thin layer of rust.