Vanadinite
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Lead
Chlorovanadate
Pb
5(VO
4)
3Cl
Vanadinite
is a lead mineral colored by vanadium, typically red like crocoite. It
has the same structure and crystal shape (sometimes) as Apatite. It is
a part of a series with two other minerals, they are pyromorphite (Pb
5(VO
4)
3Cl)
and mimetite (Pb
5(AsO
4)
3Cl). The
hexagonal crystals of the Vanadinite are usually prismatic but often
the crystals are skeletal or cavernous, which may be found in crusts.
It has uneven fracture and is brittle.
The mineral was earlier described as a chromate by Andres Manuel del
Rio, who discovered it in Mexico in 1801. In 1830, metal vanadium was
discovered and vanadinite got its identity. Vanadinite's high luster
and deep red color is a nice appeal to mineral collectors.
Physical Properties of Vanadinite
| Color |
Bright red to orange, less
commonly gray or brown. |
| Luster |
Vitreous to adamantine. |
| Transparency |
Crystals are tarnsparent to
translucent. |
| Crystal system |
Hexagonal; 6/m |
| Cleavage |
None |
| Fracture |
Conchoidal |
| Hardness |
3 |
| Specific gravitey |
Approximately 6.6+. It is very
heavy for translucent minerals. |
| Streak |
Yellowish white. |
Associated Minerals of Vanadinite
- Wulfenite
- Limonite
- Barite
- Galena
- Secondary
lead deposit minerals
Uses of Vanadinite
- Steel
alloys
- Auto
and railway equipment
- As
mineral specimens
- As
an ore of vanadium
Occurrences of Vanadinite
- Arizona,
New Mexico, and South Dakota in the USA
- Tsumeb,
Nambia
- Zambia
- South
Africa
- Austria
- Spain
- Morocco
- Argentina
- Mexico
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