Zonge International is a leading manufacturer of geophysical data acquisition systems, particularly known for its GDP series receivers. These receivers are designed for the acquisition of controlled- and natural-source geoelectric and electromagnetic (EM) data, making them a popular choice among contractors and exploration groups worldwide. The GDP series is recognized for its reliability, versatility, and ability to adapt to various applications, including near-surface, mining, geothermal, and oil and gas markets. Zonge International has been a significant innovator in the field of electrical and electromagnetic geophysics, contributing to advancements in exploration techniques since its founding in 1972.

Volcanogenic massive sulfide ore deposits, also known as VMS ore deposits, are a type of metal sulfide ore deposit, mainly copper-zinc which are associated with and produced by volcanic-associated hydrothermal vents in submarine environments.

VMS deposits are rich metal sulfide ore deposits formed by submarine volcanic activity, primarily containing copper, zinc, lead, gold, and silver.

An Orogenic Gold deposit is a type of hydrothermal mineral deposit. More than 75% of the gold recovered by humans through history belongs to the class of Orogenic gold deposits. Rock structure is the primary control of orogenic gold mineralization at all scales, as it controls both the transport and deposition processes of the mineralized fluids, creating structural pathways of high permeability and focusing deposition to structurally controlled locations.

RES2DINV is the 2D resistivity and IP inversion software, besides normal land surface surveys, it also supports underwater and cross-borehole surveys. In addition to the standard Wenner (alpha, beta, gamma), Wenner-Schlumberger, pole-pole, pole-dipole, inline dipole-dipole, equatorial dipole-dipole arrays; it also supports non-conventional electrode arrangements. RES3DINV is the 3D resistivity and IP inversion software, and it is probably the first widely available commercial software of this type.

Skarn deposits are ore deposits formed by metasomatic alteration of carbonate rocks, typically near igneous intrusions, and are important sources of metals like copper, iron, tungsten, and gold.
Skarn deposits form when hot, chemically-active fluids from magmatic intrusions interact with carbonate rocks such as limestone or dolomite, causing metasomatism—a process that alters the mineralogy and chemistry of the host rock.

Types of Skarn Deposits
Skarn deposits are classified based on the associated igneous rock and dominant mineralogy:

1. Calc-silicate skarns: Common, associated with diorite, quartz diorite, or granodiorite, containing garnet, pyroxene, and wollastonite.
2. Magnetite skarns: Associated with mafic or ultramafic intrusions, rich in magnetite and pyroxene.
3. Chlorite skarns: Formed in chlorite-rich rocks, containing garnet, epidote, and actinolite.
4. Tungsten skarns: Granitic-related, containing scheelite, wolframite, and molybdenite.
5. Gold skarns: Granitic-related, with pyrrhotite, pyrite, and arsenopyrite.