which is a natural iron oxide mineral. Olivine Olivine abrasives consist of a magnesium iron silicate mineral. Olivine abrasives are widely used for blasting and waterjet cutting applications in ...
Garnet is a natural silicate mineral. Mineral abrasives that are made of kieserite are relatively soft and water-soluble. Types of mineral abrasives include magnetite and iron oxide, olivine, pumice, ...
The standards used are natural albite (Si and Na), orthoclase (K), corundum (Al), wollastonite (Ca ... as well as quartzites with locally intercalations of metaconglomerate (Fig. 3a–e). Four samples ...
Henry Highland Garnet -- born a slave, well educated, known for his skills as an orator, a leading abolitionist, a clergyman -- stood before the delegates of the 1843 National Negro Convention in ...
Short articles that focus on some of the key challenges, issues or developments in natural products research. They can be "opinion" style articles, which give the author's perspective on a particular ...
The garnet is the first part of a medieval silver cross to be revealed by archaeologists A large garnet has been found at the centre of a "unique" silver cross uncovered by archaeologists at an ...