Name 1
POOR ORE WITH WELL-MINERALISED RICH GRAVEL-STONE
Name 2
/
ID number
002.30.Idrija
Manager / Administrator
Idrija Mercury Heritage Management Centre, Bazoviška 2, SI-5280 Idrija
Ownership
Public
Owner
Republic of Slovenia
Local / Original ID Number
600 a
Type of Object
Ore deposit

Description

Short description
The sample of irregular shaped grey dolomite gravel is transected and polished. The basic rock is composed of dolomite gravel-stone and fragments of various sizes. Among them, there is also the gravel-stone, enriched with mineralised cinnabar skit dolomite. Clasts are bound with poorly mineralised kaolinite-sandy base.
Measures
Length 16 cm, width 12 cm, thickness 6 cm.
Materials
Dolomite gravel with kaolinite-sandy base.
Dating
Mid-Triassic, Ladinian – Longobardian.
Author / Producer
/
Picture attachments
Original use
Mineralised gravel-stone of Upper-Scythian dolomite was flooded as gravel-stone in the middle part of the Karoli tectonic unit. Later on, the gravel sample with gravel-stone of older mineralisation was additionally hydrothermally poorly mineralised with cinnabar.
Present use
The specimen of mineralised gravel-stone 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 also be used for temporary exhibitions and for other types of mercury heritage promotions.
Original location
Idrija ore deposit, Logar MF – Level 6 on the IV main level.
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 CUDHg archive];
- Čar, Jože. Razvoj srednjetriasnih sedimentov v idrijskem rudišču: doctoral thesis. Faculty of Natural Sciences and Engineering in Ljubljana, 1985;
- 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
28. 2. 2018
Date Edited
Never