Definition
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Etymology
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Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite
From its occurrence at Litchfield, Maine, USA
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock
Diamictite is a sedimentary rock that consists of non-sorted to poorly sorted terrigenous sediment containing particles that range in size from clay to boulders, suspended in a matrix of mudstone or sandstone
From Greek dia through and meiktós or mixed
Coarse Grained Rock, Opaque Rock