GEO Exploration Hub Latest Questions
Native metals Native metal is a term used to describe metals discovered in their natural, elemental form – either as an alloy, or in pure form. The list of metals which can occur in native deposits is long, though very few can ...
Minerals containing elements of economic value are generally present in all igneous rocks, but the elements may not be concentrated enough to make mining economical. Only in relatively rare circumstances are they in sufficient abundance so that mining is profitable. If the ...
Most geologists involved in almost every phase of field geology use geologic maps. For example, petrologists use these maps to determine the location of possible economic resources, such as metal ores, water, or oil. Ceomor· phologists use such maps to ...
A geologic map is actually a form of topographic map, but in this case it shows the type of sediment or rock outcrops exposed at the Earth’s surface, along with the contour lines. The information on these maps can range ...
Jade and serpentine are two important types of minerals that have applications in jewelry and ornamental industries. The key difference between jade and serpentine is that jade is comparatively harder and less scratchy, whereas serpentine is softer and scratches more ...
One major difference between basaltic and granitic magma is their specific mineral contents. Basaltic magma contains between 45 and 55 percent silicon dioxide and is high in magnesium, iron and calcium, while granitic magma contains between 65 and 75 percent ...
These three igneous rocks pretty much have the same chemistry and mineralogy. The are all black or very dark grey. The main difference between them is the grain size. Basalt is fine grained and Gabbro is course grained. This is ...