3D Subsurface Modeling of Mineralization: A Case Study from Handeresi (Çanakkale, NW Turkey) Pb-Zn-Cu Deposit

Abstract

The main goal of 3D modeling studies in the mining sector is to address the complex geological, mineralogical, and structural factors in subsurface environments and detect the ore zone(s). In order to solve this complexity, use of quality data (e.g., a wide range of boreholes at regular intervals) is necessary. However, this situation is not always possible because of certain restrictions such as intensive vegetation, high slope areas, and some economic constraints. At the same time, with the development of computer technology, the unused and/or insufficiently considered data need to be gathered and reviewed. This assessment may lead to the detection of potential new zone(s) and/or could prevent unnecessary costs. In this study, the target area that was chosen had inadequate and unusable data, and we used the data as effectively as possible. The Handeresi area is located in the Biga Peninsula of northwestern Turkey. In this area, the Pb-Zn-Cu occurrences take place in carbonate levels of metamorphic rocks or at the fractures and cracks of other metamorphic rocks. The area is being explored actively now. In this study, using the borehole data, we attempted to model the subsurface of this area in 3D using commercial RockWorks2006® software. As a result, there were 3 ore zones that were seen intensively in this area. One of them indicates the area in which the adits are now operating. The others could be new potential zones.

AN ORE ADIT PLANNING WITH THE HELP OF 3-DIMENSIONAL ORE BODY MODELING: A CASE STUDY FROM ÇULFA ÇUKURU Pb-Zn-Cu-Ag DEPOSIT

“…The basic logic for this method is to determine the area with most potential for ore being found in the underground environment. This method of intersecting areas was applied by Akıska et al (2013) to determine the potential ore areas in an underground environment. The study was checked both with cross-validation methods and in the fi eld survey, the results were highly promising.…”

“…Based on detailed studies of the Çulfa Çukuru area by Akıska (2010), Akıska et al (2010Akıska et al ( , 2013, Akıska and Demirela (2014), the units, from older to younger, are Çamlık granodiorite (Devonian), Permo-Triassic Kalabak metamorphic rocks, including metasandstone and calc-schist lenses (Permo-Triassic), Eybek pluton (Oligo-Miocene), and Kalkim volcanics (Middle Miocene) (Akıska, 2010 ).…”

“…the intersection of the "low" grading sector of Pb% and the "low" grading of Zn%). Although it is possible to fi nd the ore zones outside of these areas, the promising areas are the intersectional areas (Akıska et al, 2013).…”

“…The fact that the R 2 values are close to 1, the Mean Error values are very close to 0, and the RMS values are relatively low values, they indicate that the applied interpolation algorithm and related parameters were selected very closely to the real values. (the numbers were arbitrarily selected) (Akıska et al, 2013). …”

Spatial Variation of Silt and Clay Sediment Deposit in Bhaktapur City

“…Recently, RockWork2016 has been used in different studies (Fufa, 2004, Zhu et al, 2003, Piya et al, 2004, Hack R et al, 2006, Rahman, 2007, Kelsey et al, 2012, Akiska et al, 2013and Dong, 2014 due to efficient data management capabilities. It facilitates easy entry of different types of subsurface data such as lithological, geophysical and geochemical data.…”