Joesmithite

PbCa₂(Mg₃Fe³⁺₂)(Be₂Si₆)O₂₂(OH)₂

Monoclino root IMA redefined

Durezza Mohs5.5 (graffiata dall'acciaio)

1. Talco

2. Gesso

3. Calcite

4. Fluorite

5. Apatite

6. Ortoclasio

7. Quarzo

8. Topazio

9. Corindone

10. Diamante

135710

Più duro di apatite (5)

التركيب

Composizione (% in peso)

O

Pb

Si

Ca

Mg

OOxygen38.8%
PbLead21.0%
SiSilicon17.0%
CaCalcium8.1%
MgMagnesium7.4%
FeIron5.6%
BeBeryllium1.8%
HHydrogen0.2%

أصل التسمية

سُمّي تيمناً بـ Joseph Victor Smith.