Ziesite

Ziesite is a mineral, copper vanadate: formula βCu₂V₂O₇. It was discovered in 1980 as monoclinic crystals around fumaroles in the crater of the Izalco Volcano, El Salvador. It is named after Emmanuel G. Zies, a mineralogist.

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Closely related is Blossite, also copper vanadate; its formula is given as αCu₂V₂O₇. It forms orthorhombic crystals. Blossite is named after mineralogist F. Donald Bloss.

The available literature does not explain the significance of the α/β forms other than the different crystal forms.

See also

• List of minerals
• List of minerals named after people

References

• Webmineral data
• Mindat.org