Search results
Results From The WOW.Com Content Network
Titanite, or sphene (from Ancient Greek σφηνώ (sphēnṓ) 'wedge'), [5] is a calcium titanium nesosilicate mineral, Ca Ti Si O 5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium ; calcium may be partly replaced by thorium .
Topaz on matrix from Dassu in Gilgit Baltistan Brookite and Quartz mineral from Balochistan. Gemstones, also known as semi-precious stones or gems, are minerals widely used in jewelry and for ornamental purposes. Northern and western regions of Pakistan are rich in high quality gemstones.
Data conversions may be as simple as the conversion of a text file from one character encoding system to another; or more complex, such as the conversion of office file formats, or the conversion of image formats and audio file formats. There are many ways in which data is converted within the computer environment.
Comma-separated values (CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record. Each record consists of the same number of fields, and these are separated by commas in the ...
Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...
Common titanium-containing minerals are anatase, brookite, ilmenite, perovskite, rutile, and titanite (sphene). [27] Akaogiite is an extremely rare mineral consisting of titanium dioxide. Of these minerals, only rutile and ilmenite have economic importance, yet even they are difficult to find in high concentrations.
Heavy mineral concentrated in a beach sand near Chennai, India. The ZTR index is a method of determining how weathered, [1] both chemically and mechanically, a sediment (or a corresponding sedimentary rock) is. The letters in ZTR stand for three common minerals found in ultra-weathered sediments: zircon, tourmaline, and rutile.
These include peridot, aquamarine, topaz, ruby, emerald, rare-earth minerals bastnaesite and xenotime, sphene, tourmaline, and many varieties and types of quartz. [1] The Pakistan Mineral Development Corporation is the responsible authority for the support and development of the mining industry. The Gemstones Corporation of Pakistan looks after ...