Name/Title
Larvikite "Norwegian Moonstone"Entry/Object ID
2022.9.8Description
About Feldspar Group
As a Commodity:Feldspar
Name:The name Feldspar is derived from the german term 'feldspat'.
Feldspar is the name of a group of aluminium silicate minerals and is collectively the most common mineral group found on the surface of the Earth. The major rock-forming minerals in the Feldspar group include albite, anorthite, orthoclase and microcline.
In petrology the group is split into two major subgroups:
Alkali feldspar - feldspar minerals poor in calcium, and mostly rich in potassium. At high temperature the alkali feldspars form a series from sanidine to high albite; the series is incomplete at low temperature. Some workers include barium feldspars (celsian and hyalophane) and probably the rubidium feldspar rubicline, as alkali feldspars.
Plagioclase - the albite to anorthite series.
Feldspars may contain very minor amounts of OH groups, considered as defects (e.g., Yang et al., 2015).Location
Location
Shelf
CS-E-4Room
Curation StorageBuilding
Crater Rock MuseumCategory
StorageMoved By
Jillian Mather KettleyDate
March 6, 2024