МИНЕРАЛОГИЯ

The collection contains examples of ten classes of minerals: elements, sulphides, halogenides, oxides, carbonates, borates, sulphates, silicates, phosphates and organic compounds. The collection contains: 1. Elements: graphite and sulphur ... еще

Ordinal Mohs’ hardness scale with minerals in boxes with a hardness of 1-10. The mineral in level 10, diamond, is included as a diamond tool. The set includes: 1. Talk 2. Gypsum 3. Calcite 4. Fluorite 5. Apatite 6. Orthoclase ... еще