1 Definition
1.1 Definition
Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
1.2 History
1.2.1 Origin
1.2.2 Discoverer
Christian Leopold von Buch
Marcus Vitruvius Pollio
1.3 Etymology
From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
1.4 Class
Igneous Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock