Geographical location and Access route
The Goude-Kalvari) area of 21.99 km2) is located in the southeast of Dehaj and northwest of javazm in Iran. This area has access to the centers of Yazd and Kerman provinces from Kerman-Anar-Javazm and Yazd-Dehj-Javazm routes.
View of the study area on the google earth satellite image
View of the access routes of the study area on the roadmap of Iran
The Goude-Kalvari copper mine area is located on geological maps of Dehaj and Anar at 1:100000 scale. In this area, units of eocene, eocene-oligocene, oligomiocene and quaternary are observed. The structurally, this deposit is located in central Iran zone, in the Urmia- Dokhtar Magmatic arc and in the Dehaj-Sardoiyeh block. In this area, the Urmia- Dokhtar Magmatic arc includes a thick sequence of basaltic- andesitic lavas and eocene tracky-andesite with the related tuffs. These units have been interrupted by large masses of granodiorite and diorite-quartzdiorite at oligosene- miocene epoch, also hydrothermal activity resulting from from the penetration of these masses have led to extensive metamorphosis of eocene volcanic rocks and granitoid masses.
View of the study area on geological maps of Dehaj and Anar at 1:100000 scale
In this area, the main mass of porphyry (mineralizing factor) is a combination of granodiorite with porphyry texture. Also, two masses of quartzdiorite and monzodiorite are observed, which in some parts have alterations and mineralization.
At the surface, this mass is associated with the copper oxide mineralization, mainly by the leached zone.According to the powder drilling, a sulfur zone (supergen) is observed at a depth of about 15 to 20 meters. The Cu Oxide minerals include Malachite, Azurite and Neotocite, which are in the form of filling the surfaces and vein–veinlets by medium intensity. In this area, are observed Potassic, phylic and argilick alterations with Copper oxide mineralization. In some areas along the faults, silica alteration with hydrothermal breccias and copper mineralization are observed. There is also a very small amount of iron (magnetite) mineralization at several points. Andesitic rocks in the margins of the altera masses, have been affected by hydrothermal activities, altered and mineralized. It also has a weak and medium intensity of phyllic and argillic alteration and a low-intensity propylitic. Finally, the genesis is porphyry and its general form is mass. however, copper mineralization in the form of vein and veinlets along with silica is also found in the host rocks (andesite to andesite – tuff) in the margins of the mass. which, in some parts, they have the right width and length, which, a little deeper with chalcocite, chalcopyrite and bornite (copper sulfate) would be associated. In several parts, the oligist (iron oxides) are observed in the form of dissemination in the veins and siliceous veins inside the andesites.
View of the volcanic unit (andesite) of study area
View of the granodiorite with porphyry texture of study area
View of the Oxide mineralization in the main mass of study area
View of the altered and leached andesite of study area
Conducting exploration activities
Exploratory activities in this mine started at the beginning of 2016 with an area of 21.99 square kilometers. In study area, after Prospecting, hammer Explorations, determining promising areas and Primary samplings, 6 blocks (A to F) were identified.
Conducting exploration activities for each block
⦁ Block A
Topographic map (scale_ 1:1000):168/66 hectares
Geological map (scale_ 1:1000):364/58 hectares
Sampling and analysis of surface: 508 samples
Trench: About 4000 Cubic Meters (m³)
Sampling and analysis of trench: 1855 samples
Core Drilling: 9666 meter (53 Holes)
Core studies: 9666 meter
Sampling and analysis of cores: 4639 samples
Study thin and polished sections: 15 samples
Powdery Drilling: 1027 meter (73 Holes)
d analysis of powderes: 529 samples
Measured reserve: 15 million tonnes at 0.3 ppmCu
⦁ Block B
Topographic map (scale_ 1:1000):22/44 hectares
Sampling and analysis of surface: 15 samples
⦁ Block C
Topographic map (scale_ 1:1000):36/31 hectares
Geological map (scale_ 1:1000):36/31 hectares
Sampling and analysis of surface: 38 samples
In blocks of D, E and F, a total of 83 surface samples were harvested.