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Diagram as published by McKelvey in 1973 [1] Diagram as published by McKelvey in 1976 [2]. A McKelvey diagram or McKelvey box is a visual representation used to describe a natural resource such as a mineral or fossil fuel, based on the geologic certainty of its presence and its economic potential for recovery.
Mineral Notes Ref; Khushab District: Bauxite: The bauxite is best developed from Nilawahn to Khura in the south of the Salt Range. In general the content of alumina and silica has inverse relationship from east to west. [1] Jhelum District: Bentonite
The study is primarily focused on metallic mineral deposits and mineral resources. The techniques employed by other Earth science disciplines (such as geochemistry , mineralogy , geophysics , petrology , paleontology and structural geology ) might all be used to understand, describe and exploit an ore deposit.
Tourmalines have a very complex chemistry that can be described by a general formula XY 3 Z 6 (BO 3) 3 T 6 O 18 V 3 W. The T 6 O 18 is the basic ring structure, where T is usually Si 4+, but substitutable by Al 3+ or B 3+. Tourmalines can be subgrouped by the occupancy of the X site, and from there further subdivided by the chemistry of the W site.
Mineral Resources are further sub-divided, in order of increasing geological confidence, into inferred, indicated and measured as categories. Inferred Mineral Resource is the part of a mineral resource for which quantity, grade (or quality) and mineral content can be estimated with a low level of confidence. It is inferred from geological ...
Examples: wadsleyite (Mg 2 SiO 4) a sorosilicate and high pressure polymorph of forsterite and ringwoodite; leucophanite (NaCaBeSi 2 O 6 F), but it has Nickel-Strunz identifier 9.DH.05 (inosilicates with 4-periodic single chains, Si 4 O 12); clinoenstatite (MgSiO 3), but it has Nickel-Strunz identifier 9.DA.10 (inosilicates with 2-periodic ...
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The traditional curriculum of natural resource economics emphasized fisheries models, forestry models, and mineral extraction models (i.e. fish, trees, and ore). In recent years, however, other resources, notably air, water, the global climate, and "environmental resources" in general have become increasingly important to policy-making.