Voltzite from
Plombières, Liège, Wallonia, Belgium
Locality type: | Municipality | |||||||||||||||||||||
Classification | ||||||||||||||||||||||
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Species: | Wurtzite var: Voltzite | |||||||||||||||||||||
Formula: | (Zn,Fe)S | |||||||||||||||||||||
Comments: | Mélon et al. (1976): "In the collections of the University of Liège, a specimen originating from the Bleiberg and described by Buttgenbach (1921) carries the name of "voltzine". The mineral is in the form of small botryoidal globules covering quartz crystals. Light yellowish brown, these globules, with a density of 3.79, scratching fluorite, show a concentric texture with accumulation of small golden yellow scales in very weakly birefringent thin scales. They fall apart in the closed tube and are soluble with effervescence in hydrochloric acid. The X-ray study, recently done by Fransolet, reveals a diffuse powder diagram; the size of the rays does not permit precise measurements, but the distances found are close enough to those of the powder diagram of sphalerite. Voltzite: 3.08 2.64 1.91 1.61 1.34 1.23 Å Sphalerite: 3.12 2.70 1.91 1.63 1.35 1.24 Å The look of the diagram and the similarity with sphalerite recall the observations of Fournet (1833) and Frondel (1967) on voltzites from Sterling Hill (New Jersey) and from Roisiers (Puy-de-Dôme). These two authors have shown, on the other hand, that voltzite is just a mixture of sphalerite with an organometallic compound of zinc, resulting from the precipitation of a gel." | |||||||||||||||||||||
Habit: | botryoidal globules on quartz crystals | |||||||||||||||||||||
Colour: | Yellowish brown | |||||||||||||||||||||
Confirmation | ||||||||||||||||||||||
Validity: | Unconfirmed/Questioned | |||||||||||||||||||||
Data | ||||||||||||||||||||||
Mineral Data: | Click here to view Voltzite data | |||||||||||||||||||||
Locality Data: | Click here to view Plombières, Liège, Wallonia, Belgium | |||||||||||||||||||||
Data Identifiers | ||||||||||||||||||||||
Mindat Occurrence Record ID: | 1507332 | |||||||||||||||||||||
Long-form Identifier: | 1:3:1507332:9 | |||||||||||||||||||||
GUID (UUID V4): | 91cb9dde-b309-4207-bf58-c82af5d900cd | |||||||||||||||||||||
References | ||||||||||||||||||||||
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