Search results
Results from the WOW.Com Content Network
Lustre (British English) or luster (American English; see spelling differences) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux , meaning "light", and generally implies radiance, gloss, or brilliance.
Goslarite is a hydrated zinc sulfate mineral (ZnSO 4 · 7 H 2 O) which was first found in the Rammelsberg mine, Goslar, Harz, Germany. It was described in 1847. It was described in 1847. Goslarite belongs to the epsomite group which also includes epsomite ( MgSO 4 · 7 H 2 O ) and morenosite ( NiSO 4 · 7 H 2 O ).
An amorphous metal (also known as metallic glass, glassy metal, or shiny metal) is a solid metallic material, usually an alloy, with disordered atomic-scale structure. Most metals are crystalline in their solid state, which means they have a highly ordered arrangement of atoms .
Mineralogy applies principles of chemistry, geology, physics and materials science to the study of minerals. Mineralogy [n 1] is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts.
Hyalite has a hardness of 5.5–6 on the Mohs scale and a specific gravity of 1.9–2.1. Lacking a plane of cleavage, it has a conchoidal fracture.The transparent or translucent mineraloid has a globular structure, a vitreous luster, and a white streak.
Lawsonite is a metamorphic silicate mineral related chemically and structurally to the epidote group of minerals. It is close to the ideal composition of CaAl 2 Si 2 O 7 (OH) 2 ·H 2 O giving it a close chemical composition with anorthite CaAl 2 Si 2 O 8 (its anhydrous equivalent), yet lawsonite has greater density and a different Al coordination (Comodi et al., 1996).
Finger nail is 2.5, copper coin is 3.5, glass is 5.5 and steel is 6.5. Hardness scale is Talc is 1, Gypsum is 2, Calcite is 3, Fluorite is 4, Apatite is 5, Orthoclase Feldspar is 6, Quartz is 7, Topaz is 8, Corundum is 9 and Diamond is 10. Odor; Not always recommended. Does the mineral have an odor of oil, sulfur or something else or is there ...
Chlorite minerals show a wide variety of compositions, in which magnesium, iron, aluminium, and silicon substitute for each other in the crystal structure. A complete solid solution series exists between the two most common end members, magnesium-rich clinochlore and iron-rich chamosite .