Hyperspectral seafloor surveys using airborne or spaceborne sensors are generally limited to shallow coastal areas, due the requirement for target illumination by sunlight. Deeper marine environments devoid of sunlight cannot be imaged conventional hyperspectral imagers. Instead, a close-range, sunlight-independent survey approach is required. In this study, we present first image data from deep seafloor. The were acquired in approximately 4200 m water depth new Underwater Imager (UHI)...

Lithium (Li) can be extracted in closed system facilities from brines pumped to the surface through wells and returned thereafter. These rapidly developing technologies for direct Li extraction are suitable offshore application promise low environmental impact. This study investigated potential Li-rich brine systems sedimentary basins combining interpretation of geological, geophysical […]

Underwater hyperspectral imaging is a relatively new method for characterizing seafloor composition. To date, it has been deployed from moving underwater vehicles, such as remotely operated vehicles and autonomous vehicles. While allow rapid surveying of several 10-1000 m2, they are subjected to short-term variations in vehicle attitude that often compromise image acquisition quality. In this study, we tested stationary platform was landed on the seabed used an imager (UHI) vertical swinging...

Measurement while drilling (MWD) data are gathered during operations and can provide information about the strength of rock penetrated by boreholes. In this paper MWD from a marble open-pit operation in northern Norway studied. The types represented discrete classes, is then modeled hidden Markov model (HMM). Results using different variables studied presented. These results compared co-interpreted with optical televiewer (OTV) images, magnetic susceptibility spectral gamma values collected...

Abstract Brønnøy Kalk AS operates an open pit mine in Norway producing marble, mainly used by the paper industry. The final product is as filler and pigment for production. Therefore, quality of has utmost importance. In mine, primary indicator, called TAPPI, quantified through a laborious sampling process laboratory experiments. As part digital transformation, measurement while drilling (MWD) data have been collected mine. purpose this to use recorded MWD prediction marble facilitate...

The paper outlines the development of an XGBOOST algorithm-based lithology prediction model using MWD data from blast hole drilling machines in a quartzite mine. focus is on predicting shale layers to address quality issues caused by dilution. Initial 10 boreholes were used construct small database, progressively expanded with field observations and historical records then best-performing was selected. Sensitivity analysis identified key parameters impacting model, emphasising those distinct...

In this paper, the radial basis function neural network (RBFNN) is used to generate a prospectivity map for undiscovered copper-rich (Cu) deposits in Finnmark region, northern Norway. To input data RBFNN, geological and geophysical data, including up 86 known mineral occurrences hosted mafic host-rocks, were combined at different resolutions. Mineral integrated into “deposit” “non-deposit” training sets. Running RBFNN on vectors, with k-fold cross-validation method, showed that increasing...

Abstract Minerals and metals are of uttermost importance in our society, mineral resources on beneath the deep ocean floor represent a huge potential. Deciding whether mining from is financially, environmentally technologically feasible requires information. Due to great depths harsh conditions, this information expensive time resource consuming obtain. It therefore important use every piece data an optimum way. In study, retrieved images expert knowledge were used estimate minimum maximum...

Exploring for minerals on the seabed is challenging - and ability to collect representative sub surface samples essential. The research project MarMine led by NTNU has together with Seattle based Williamson Associates developed tested an ROV-based drill rig mineral (seafloor massive sulfides) rock sampling. ROCS system a single stroke simple, robust possible use from various larger ROVs. For vehicle provide stable platform, vertical bollard pull of ROV mass are important variables. uses thin...

Sublevel caving mining causes surface deformation in three distinct zones parallel to the extracted deposit. Most of published research is focused on extent caved and fracture zones. The largest, continuous zone and, thus, influence mine its surroundings not yet fully documented. This study aimed at assessing caused by a steep iron ore deposit Norway. For this purpose, an innovative combination permanent scatterer (PS) InSAR technique line-of-sight (LOS) movement data provided public web...

This paper introduces the concept of using a geometallurgical flowsheet as tool to design, visualize and communicate program. The development is carried out case study an industrial mineral mining operation. A modified Integration Definition for Function Modeling (IDEF0) technique proposed methodology develop flowsheet. program defined summary operations necessary validate model. model function that links georeferenced in-situ geological characteristics measure performance in processing...

Abstract Deep marine mineral deposits are that have been formed outside the continental slope. Currently three main types of generally recognized: polymetallic manganese nodules, massive seafloor sulfides and cobalt-rich crusts. The authors argue resource management must be holistic. Holistic requires a clear understanding objectives to achieved through mining assess ensure proper balance between costs, risks, potential gains losses. For decades there substantial uncertainties regarding...

Abstract In this paper, model‐based systems engineering (MBSE) and discrete event simulation (DES) are combined to assess the performance of an offshore production system at early stage. Various tools applied industrial case concerning retrieval deep‐sea minerals, a engine is developed calculate annual output. A mean 1 Million tonnes ore per year estimated for operation in Norwegian Sea using Monte Carlo simulation. Depending on limiting design wave height marine operations, output ranges...

Nabbaren nepheline syenite, a silica-deficient intrusive rock with low Fe content, was the industrial mineral deposit study case in this study. The quality of products are generally based on their bulk chemistry, which directly related to modal mineralogy and chemistry; however, these costly time-consuming determine. A geometallurgical-based methodology, known as element-to-mineral conversion (EMC), applied estimate its given chemistry. EMC is convenient cost-effective technique, can be used...

To support open-pit studies related to seafloor massive sulfides mining projects, an economic block-model is required. A modular framework proposed produce block models accommodating various levels of data. The illustrated on a site interest located the Arctic Mid-Ocean Ridge. Random sampling based literature datasets performed assign grades, porosity and grain density model. Other required parameters are produced using relationships found in literature. Revenues estimated values within net...