Provenite

Panasqueira Mine (Covilha)

MineActiveDraft data

40.1500° N, 7.7500° W · ± 10 km

Dolomite from Castelo Branco, Portugal, with photos of specimens from this locality.

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Minerals found here

Dolomite

Dolomite at Panasqueira Mine (Covilha)

Late-stage dolomite, partly as mixed crystals with siderite cores, in the tungsten-bearing quartz veins

Quartz crystal with pyrite inclusions accompanied by dolomite.
Quartz crystal with pyrite inclusions accompanied by dolomite.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
CaMg(CO₃)₂
Associated minerals
Quartzpyritesideritecalcitechlorite

Sources: SRC-512 SRC-486

About Dolomite →

Geology of the locality

Setting
Field of sub-horizontal quartz veins with wolframite, cassiterite and chalcopyrite related to a Variscan granite and greisen cupola
Type
Hydrothermal
Host rock
Schist-greywacke complex of the Beiras Group
Region
Castelo Branco
Country
Portugal

Coordinates from Wikipedia (rounded). Dolomite belongs to the late carbonate stage of the veins.

Sources: SRC-486

Sources

  1. SRC-486 · Website
    PanasqueiraWikipedia contributors · Wikipedia
  2. SRC-512 · Website
    File:Dolomite-Pyrite-Quartz-gha8a.jpg (Wikimedia Commons)Robert M. Lavinsky · Wikimedia Commons

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.