Photo of a sample of Ordoñezite — Photo: Geni · CC BY-SA 4.0
Ordoñezite
A rare tetragonal zinc antimonate from Mexican tin deposits.
Intro adapted from Wikipedia (CC BY-SA).
Ordoñezite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula ZnSb⁵⁺₂O₆.
It crystallizes in the tetragonal crystal system (space group P4_2/mnm). It is a member of the Tapiolite structural group.
Key properties: Mohs hardness 6.5; specific gravity 6.635; refractive index 2.03; optically uniaxial.
IMA symbol Ord, grandfathered status — known before the IMA’s founding, named in 1955.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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