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Troctolite
Troctolite

Lamprophyre
Lamprophyre



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Troctolite
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Lamprophyre
Definition

Definition

Origin

Discoverer

Etymology

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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
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Christian Leopold von Buch
From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)
Igneous Rocks
Durable Rock, Hard Rock
Plutonic
Coarse Grained Rock, Opaque Rock
 
Lamprophyre is uncommon igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks and small intrusions
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Unknown
From Greek lampros bright and shining + porphureos purple
Igneous Rocks
Durable Rock, Medium Hardness Rock
Plutonic
Coarse Grained Rock, Fine Grained Rock, Opaque Rock