You searched for:
“geocronite”
1. A lead-gray or grayish blue mineral with a metallic luster: A geocronite consists of sulphur, antimony, and lead, with a small proportion of arsenic.
2. A white or greenish-white, opaque, metallic, monoclinic mineral: Geocronites usually occur in massive, granular form, and have a specific gravity of 6.4 and a hardness of 2.5 on the Mohs scale.
2. A white or greenish-white, opaque, metallic, monoclinic mineral: Geocronites usually occur in massive, granular form, and have a specific gravity of 6.4 and a hardness of 2.5 on the Mohs scale.
A scale for classifying minerals based on relative hardness, is determined by the ability of harder minerals to scratch softer ones.
The scale includes the following minerals listed in order from the softest to the hardest:
- talc
- gypsum
- calcite
- fluorite
- apatite
- orthoclase
- quartz
- topaz
- corundum
- diamond
This entry is located in the following unit:
geo-, ge- +
(page 6)