Name 1
ANTHRACITE CINNABAR ORE
Name 2
/
ID number
002.32.Idrija
Manager / Administrator
Idrija Mercury Heritage Management Centre, Bazoviška 2, SI-5280 Idrija
Ownership
Public
Owner
Republic of Slovenia
Local / Original ID Number
RS – 32 (samples from RS – 32/1 to 32/8)
Type of Object
Ore deposit
Description
Short description
The anthracite sample (its old name is burning ore) is black, has a glassy sheen, black scratch and a shell-like fault. The base is anthracite. Cinnabar is found in fractures and capillaries. We can also find the mineralised shells of brachiopods and chalcedony cinnabar grains.
Measures
/
Materials
Anthracite
Dating
Ladinian, Longobardian
Author / Producer
/
Picture attachments
Original use
We presume, that the coal inserts in Skonca beds were relatively rare, therefore the mineralised coal is an extremely rare feature of the Idrija ore deposit. Anthracite appeared in middle and upper layers of Skonca beds in the form of inserts and in up to 40 cm thick lenses (“Turniš”). After 1970, the mineralised anthracite inclusions were found only in the “Turniš” ore body. Cinnabar mineralisation appears mainly in the form of veins and moulds of superficial layers, which indicates the epigenetic type of mineralisation.
Present use
The anthracite cinnabar ore is being preserved, secured and presented as important natural heritage of Idrija ore deposit with exceptional universal values. It represents a unique soil “archive”, as the sample was excavated in Idrija ore deposit and also stored. It is a part of the thematic collection “Epigenetic ore” of the Mine geological collection, displayed in the administrative premises of CUDHg, as a part of the Francis’ shaft. The described specimen is exhibited in a display case. It can be used for temporary exhibitions and for other types of mercury heritage promotions.
Original location
Idrija ore deposit, Logar MF
Present location
CUDHg (Mining Geological Collection), Bazoviška 2, SI-5280 Idrija
STATE OF CONSERVATION
History of conservation:
The sample is appropriately preserved. Additional interventions are not necessary. Security of the premises is taken care of.
Present state
good
Necessary activities:
Regular seasonal maintenance.
DOCUMENTATION
Addresses / collections / links etc. where further in-depth information is accessible:
- CUDHg Inventory Book;
- Čar, Jože. Rudniška geološka zbirka: Seznam in opis vzorcev. Mercury Mine Idrija, 2003, p. 1–122, [material is kept in the archive of CUDHg];
- Čar, Jože. Razvoj srednjetriasnih sedimentov v idrijskem rudišču: doctoral thesis. Faculty of Natural Sciences and Engineering in Ljubljana, 1985.
- Čar, Jože. Ladinijske plasti skonca idrijskega rudišča (Z Slovenija). Geologija, 56/2, 2013, p. 151–174;
- Drovenik, Matija, Mlakar, Ivan. Strukturne in genetske posebnosti idrijskega rudišča. Geologija, 14, 1971, p. 67‒126.
- Čar, Jože. Rudniška geološka zbirka: Seznam in opis vzorcev. Mercury Mine Idrija, 2003, p. 1–122, [material is kept in the archive of CUDHg];
- Čar, Jože. Razvoj srednjetriasnih sedimentov v idrijskem rudišču: doctoral thesis. Faculty of Natural Sciences and Engineering in Ljubljana, 1985.
- Čar, Jože. Ladinijske plasti skonca idrijskega rudišča (Z Slovenija). Geologija, 56/2, 2013, p. 151–174;
- Drovenik, Matija, Mlakar, Ivan. Strukturne in genetske posebnosti idrijskega rudišča. Geologija, 14, 1971, p. 67‒126.
Submitted
Mestni muzej Idrija
Submitted by
Miha Kosmač
Date Submitted
1. 3. 2018
Date Edited
Never