The most compelling evidence that the Sphinx was built for the Egyptian Pharaoh Khafre during his reign (2520-2494 BC) is in the architecture, geology, and archaeology of the Sphinx and its related monuments. … The Sphinx may have been intended to associate the king with the sun god. Why didRead More →
The Ring of Fire is the name given to the emerging mining district in the James Bay Lowlands region, located 500 kilometers northeast of Thunder Bay in Northern Ontario. Who owns the Ring of Fire? Noront Resources (TSXV:NOT) is a Canadian-based mining company, with ownership or a controlling interest ofRead More →
The name derives from the Greek, anti + monos for “not alone” or “not one” because it was found in many compounds. The symbol Sb comes from stibium, which is derived from the Greek stibi for “mark” because it was used for blackening eyebrows and eyelashes. How did tin getRead More →
Amphibole (/ˈæmfɪˌboʊl/) is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO. 4. tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Is amphibole a mineral or rock? Amphibolite is a dark, heavy, metamorphic rock composed mostlyRead More →
Producing large quantities of a metal like iron, aluminum, or copper therefore involves two distinct operations: extracting an ore (a deposit consisting usually of a huge amount of useless rock and smaller amounts of useful metals) from a mine or quarry and then refining the ore to get the metalsRead More →
Gneiss usually forms by regional metamorphism at convergent plate boundaries. It is a high-grade metamorphic rock in which mineral grains recrystallized under intense heat and pressure. … Regional metamorphism can transform shale into slate, then phyllite, then schist, and finally into gneiss. Why is a rock metamorphic? Metamorphic rocks formRead More →
Bauxite ore is the world’s primary source of aluminum. … Alumina is then smelted using an electrolysis process to produce pure aluminum metal. Bauxite is typically found in topsoil located in various tropical and subtropical regions. The ore is acquired through environmentally responsible strip-mining operations. Who discovered Gibbsite? The MineralRead More →
Laterite is both a soil and a rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. What is gibbsite and boehmite? Boehmite (γ-AlOOH) and gibbsite (α-Al(OH)3)Read More →
The solar-powered rover got trapped in a massive dust storm, which blotted out the sun, its source of energy. And after the storm cleared, Opportunity — affectionately called “Oppy” — didn’t “wake” back up. NASA announced Wednesday that it will not be hearing from the robot ever again. Did theRead More →
In areas where cover material is thicker, or sediments contain more clay, cover-subsidence sinkholes are relatively uncommon, are smaller, and may go undetected for long periods. Cover-collapse sinkholes may develop abruptly (over a period of hours) and cause catastrophic damages. What are the four types of sinkholes? There are basicallyRead More →