© Liverpool Geological Society

Mineral of the week

 Founded 1859
Registered Charity No: 500067

LIVERPOOL

GEOLOGICAL

SOCIETY

159th Session

2. Citrine

Formula:  Si0 2 Hardness: 7 Density: 2.65x 10 -2  kg.m -3
Citrine

3. Calcite

Formula:  CaC0 3 Hardness: 3 Density: 2.7x 10 -2  kg.m -3

4. Fluorite

Formula:  CaF 2 Hardness: 4 Density: 3.4 x 10 -2  kg.m -3

5. Tourmaline

Formula:  complex Hardness: 7 Density: 2.9x 10 -2  kg.m -3

6. Olivine

Formula:  (Mg 2+ , Fe 2+ ) 2 SiO 4.   Hardness: 7 Density: ≈ 4 x 10 -2  kg.m -3

7. Wavelite

Formula: Al 3 (PO 4 )2(OH, F) 3 ·5H 2 Hardness: 3.5 Density: ≈ 2.3 x 10 -2  kg.m -3

8. Malachite

Formula:  Cu 2 CO 3 (OH) 2   Hardness: 3.4 Density: ≈ 3.8 x 10 -2  kg.m -3
© Liverpool Geological Society

Mineral of the week

Liverpool Geological

Society

159 th session
Registered Charity No: 500067

2. Citrine

Formula:  Si0 2 Hardness: 7 Density: 2.65x 10 -2  kg.m -3
Citrine

3. Calcite

Formula:  CaC0 3 Hardness: 3 Density: 2.7x 10 -2  kg.m -3

4. Fluorite

Formula:  CaF 2 Hardness: 4 Density: 3.4 x 10 -2  kg.m -3

5. Tourmaline

Formula:  complex Hardness: 7 Density: 2.9x 10 -2  kg.m -3

6. Olivine

Formula:  (Mg 2+ , Fe 2+ ) 2 SiO 4.   Hardness: 7 Density: ≈ 4 x 10 -2  kg.m -3

7. Wavelite

Formula: Al 3 (PO 4 )2(OH, F) 3 ·5H 2 Hardness: 3.5 Density: ≈ 2.3 x 10 -2  kg.m -3

8. Malachite

Formula:  Cu 2 CO 3 (OH) 2   Hardness: 3.4 Density: ≈ 3.8 x 10 -2  kg.m -3