English Calcium carbonate Cited by user OrdovicianBryozoa on 22 Dec 2023 Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite, most notably in…
Arabic تمعدن خارجي Cited by user أحمد كادي on 14 Jun 2023 التمعدن الخارجي هو تعديل المعادن في الصخور بعد التكوين. يحدث هذا التمعدن غالبًا بالقرب من سطح الأرض بسبب التعرض لل أكسجين و ثاني أكسيد الكربون والماء.
Italian Bismuto Cited by user 93.150.81.118 on 04 Jun 2023 Il bismuto è l'elemento chimico di numero atomico 83 e il suo simbolo è Bi. È il quinto elemento del gruppo 15 (gruppo dell'azoto) del sistema periodico (6° periodo), fa…
English Isotopic signature Cited by user Aflahert on 25 May 2022 An isotopic signature (also isotopic fingerprint) is a ratio of non-radiogenic 'stable isotopes', stable radiogenic isotopes, or unstable radioactive isotopes of…