Chalk /ˈtʃɔːk/ is a soft, white, porous sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite shells (coccoliths) shed from micro-organisms called coccolithophores. Flint (a type of chert unique to chalk) is very common as bands parallel to the bedding or as nodules embedded in chalk. It is probably derived from sponge spicules or other siliceous organisms as water is expelled upwards during compaction. Flint is often deposited around larger fossils such as Echinoidea which may be silicified (i.e. replaced molecule by molecule by flint).
Chalk as seen in Cretaceous deposits of Western Europe is unusual among sedimentary limestones in the thickness of the beds. Most cliffs of chalk have very few obvious bedding planes unlike most thick sequences of limestone such as the Carboniferous Limestone or the Jurassic oolitic limestones. This presumably indicates very stable conditions over tens of millions of years.
Chalk may refer to:
Magnesium carbonate, MgCO3 (archaic name magnesia alba), is an inorganic salt that is a white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals.
The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO3) and the di, tri, and pentahydrates known as barringtonite (MgCO3·2 H2O), nesquehonite (MgCO3·3 H2O), and lansfordite (MgCO3·5 H2O), respectively. Some basic forms such as artinite (MgCO3·Mg(OH)2·3 H2O), hydromagnesite (4 MgCO3·Mg(OH)2·4 H2O), and dypingite (4 MgCO3· Mg(OH)2·5 H2O) also occur as minerals.
Magnesite consists of white trigonal crystals. The anhydrous salt is practically insoluble in water, acetone, and ammonia. All forms of magnesium carbonate react in acids. Magnesium carbonate crystallizes in the calcite structure where in Mg2+ is surrounded by six oxygen atoms. The dihydrate one has a triclinic structure, while the trihydrate has a monoclinic structure.
References to 'light' and 'heavy' magnesium carbonates actually refer to the magnesium hydroxy carbonates hydromagnesite and dypingite (respectively).
Rub or RUB may refer to:
Professional wrestling has accrued a considerable nomenclature through its long existence. Much of it stems from the industry's origins in the days of carnivals and circuses, and the slang itself is often referred to as "carny talk." In the past, wrestlers used such terms in the presence of fans so as not to reveal the worked nature of the business. In recent years, widespread discussion on the Internet has popularized these terms. Many of the terms refer to the financial aspects of pro wrestling in addition to performance-related terms.
Date honey, date syrup, or rub (Arabic: رُب, pronounced [rubb]) (Hebrew and Judeo-Iraqi Arabic: סילאן, pronounced [silan]) is a thick dark brown, very sweet fruit syrup extracted from dates. It is widely used in North African and Middle Eastern cooking.
It is used widely in Libya, usually with asida.
It is used in Israel, under the name silan, as a Dip for bread, in pastries, as a topping for malabi, to cook sweet chicken dish then rolled with a sesame or nuts which is served as a meze in southern and eastern parts of the country, it is also halik (similar to haroset) for Passover.
The honey in the Biblical reference of “a land flowing with milk and honey” (for example, Exod 3:8) is date honey.
Date syrup is rich in the monosacchirides glucose and fructose, and so most of its sugar content is absorbed into the bloodstream in the mouth, meaning that it raises the blood glucose levels more efficiently and immediately than other syrups. It is therefore highly suitable for people suffering from hypoglycaemia, or for those with sucrose intolerance or those with pancreatic problems who have difficulty absorbing disacchirides.
WTII Records is an independent record label created in 2001 by former WaxTrax! Records refugee, Bart Pfanenstiel, and David Schock.
The concept behind WTII actually started in 1999 while Bart was still employed at Wax Trax! During Wax Trax!’s final year, Bart and Dannie Flesher (co-founder of Wax Trax!) were working hard to move that label into the modern era of electro/industrial music by tapping into the new breed of bands making their way to the states from Europe. Bart had made a connection with Stefan Herwig, of then Offbeat Records. The two had discussed numerous licensing possibilities over several months and the first of those opportunities came with the signing of VNV Nation to Wax Trax! At this time TVT (Wax Trax! parent label) had decided to move things in a different direction essentially shutting down the Wax Trax! offices in Chicago. The writing was on the wall about TVT’s plans, so Bart took further steps to strengthen his ties with his European connections and the idea quickly arose about creating a new label to capitalize on these opportunities. Over the years Jim Nash (co-founder of Wax Trax!) and Dannie had taught Bart the ins and outs of running a label. After Jim’s passing, Bart worked hand in hand with Dannie on all label activities soaking in everything he could. To pay homage to the two, Bart wanted to create a label that would try to rekindle the spirit of Wax Trax!’s earlier years.