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Definition – Gabbro (/ˈɡæbroʊ/) is a phaneritic (coarse-grained), is an intrusive igneous rock that forms from the result of slow cooling of magma inside of…

Margaritasite is a yellow, cesium-bearing mineral in the carnotite group. Its chemical formula is (Cs, K, H3O)2(UO2)2V2O8·H2O and its crystal system is monoclinic. It was…

Christ the Redeemer (Portuguese: Cristo Redentor, standard Brazilian Portuguese: (ˈkɾistu ʁedẽˈtoʁ), local pronunciation: ˈkɾiɕtŭ̻ xe̞dẽ̞ˈtoɦ), is a statue of Jesus Christ in Rio de Janeiro,…

The Alhambra (/ælˈhæmbrə/, Spanish: (aˈlambɾa); Arabic: الْحَمْرَاء‎, romanized: Al-Ḥamrāʾ, pronounced (alħamˈraːʔ), lit. “The Red One”), is a palace and fortress complex of the Moorish monarchs of…

Definition – Hornfels is a fine-grained metamorphic rock that was formed by the contact between mudstone/shale, or other clay-rich rock, and a hot igneous body,…

The Acropolis of Athens is one of the most famous ancient archaeological sites in the world. It is an ancient citadel located on a rocky…

Nitric Acid (HNO3) is a very corrosive and toxic strong acid that can cause severe burns. It is both extremely corrosive and toxic. It is…

A joint venture is a business arrangement where two or more companies get into a temporary legal partnership. A contractual agreement is signed by the…

Caveat Emptor This is a general law applied to the sale of goods. It is a Latin term meaning “let the seller beware,” in contrast to…

Definition – Chert (/ˈtʃɜːrt/) is a sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). It occurs as nodules,…

Potassium nitrate is a chemical compound. It has the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−,…

“Petra” (Arabic: ٱلْبَتْرَاء‎, romanized: Al-Batrāʾ; Ancient Greek: Πέτρα, “Stone”), originally known to its inhabitants as Raqmu, ancient city, centre of an Arab kingdom in Hellenistic…