You will need to study the mineral specimens provided to fill in the blanks in the table below. Use the following guidelines for completing the table:
- Color: Describe what you see. Munsell color designations are not necessary.
- Luster: Write in either “M” for metallic or “N” for nonmetallic.
- Hardness: Soft (S) minerals can be scratched by a fingernail. Medium (M) minerals can be scratched by a penny. Hard (H) minerals cannot be scratched by a penny and can scratch glass.
- Cleavage: Note whether present (1, 2, or 3 directions) or absent (0 directions).
- Plant-available nutrients: Refer to the list of essential elements and to Tables 3 and 4. Write in the chemical symbol of nutrients that are released and used by plants by weathering of minerals.
|Mineral||Color||Luster (M or N)||Hardness (S, M, or H)||Cleavage (yes/no)||Plant-available nutrients from Minerals (Table 4) (atomic symbol & charge)|
1) Which of the minerals in Table 3 is most resistant to weathering?
2) Of the eight most common elements in the earth’s crust, which ones are essential elements that are released to plants by the weathering of minerals?
______________ ______________ ______________ ______________
3) Name the source of each of the following plant-essential elements: