Ordóñezite

Ordóñezite is a tetragonal pyramidal crystal and is found in Rhyolite fractures. The Santín mine which is located about eight kilometres from Santa Catarina, Guanajuato, Mexico is a main producer of Ordóñezite. Another is El Antimonio, 27 kilometres southwest of Agua Prieta, Sonora, Mexico.

Additional recommended knowledge

How to quickly check pipettes?

How to ensure accurate weighing results every day?

Daily Visual Balance Check

Discovery

Ordóñezite was first discovered and documented by Ezequiel Ordóñez (1867-1950), a Mexican geologist, formerly director of the Geological Institute of Mexico.

Properties

Optical properties include: semitransparent, very light to very dark colorless to pearl-gray, light yellowish olive to dark olive.

Chemical Formula: ZnSb₂O₆

Composition: Molecular Weight = 404.89 gm.

Proportions:

• Zinc, 16.15%
• Antimony, 60.14%
• Oxygen 23.17%

or, alternatively:

• Zinc (as ZnO), 20.10%
• Antimony (as Sb₂O₅), 79.90%

See also

• International Mineralogical Association
• List of minerals N-R (complete)

External links

• Santin mine