aragonite
111Nautiloid — Nautiloids Temporal range: 495–0 Ma …
112Conchiolin — The shell of Stenotrema florida, a land snail. The periostracum is an organic layer of protein which, in this species, is developed into minute hairs, giving the snail a velvety look and feel Conchiolin (sometimes referred to as conchin) and… …
113Witherite — is a barium carbonate mineral, BaCO3, in the aragonite group. [http://www.mindat.org/min 4299.html Witherite] mindat.org] Witherite crystallizes in the orthorhombic system and virtually always is twinned. The mineral is colorless, milky white,… …
114List of minerals A-B (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …
115Sclerosponge — Sclerosponges are sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite. Because of their long life span (500 1,000 years) it is thought that analysis of the aragonite skeletons …
116Carbonate minerals — are those minerals containing the carbonate ion: CO32 .Carbonate classesAnhydrous carbonates*Calcite group: Trigonal **Calcite CaCO3 **Gaspeite (Ni,Mg,Fe2+)CO3 **Magnesite MgCO3 **Otavite CdCO3 **Rhodochrosite MnCO3 **Siderite FeCO3 **Smithsonite …
117Base rock — is a generic term for aragonite rocks which have no bacterial organisms or coralline algae growing in or on the rock. Base rock is often used as filler rock in the marine aquarium as it is much cheaper to purchase than live rock. Base rock can… …
118Sabkha — Sebkhat (or Sebkha) El Melah, Tunisia in 2001, mostly dry. Note rectangular industrial evaporite pans, probably for sea salt production, upper right. Landsat 7 image …
119Carbonate hosted lead zinc ore deposits — World wide distribution of MVT deposits, (red), clastic sediment hosted (green), and unclassified (blue) lead zinc deposits. Source: USGS Carbonate hosted lead zinc ore deposits are important and highly valuable concentrations of lead and zinc… …
120Bivalve shell — The bivalve shell is one kind of seashell, and in life it is composed of two parts, two valves. The bivalve shell is part of the body, the exoskeleton, of a bivalve mollusk. Bivalves are a common part of the marine fauna worldwide (scallops,… …
