Anorthite measurement, Geake <i>et al.</i> 1971

Anorthite measurement, Geake et al. 1971

Reference	Geake et al. 1971 Geake, J.E., Walker, G., Mills, A.A. & Garlick, G.F.J. (1971). Luminescence of Apollo lunar samples. In Proceedings of the Second Lunar Conference, A. A. Levinson (Ed.), pp. 2265-2275. Geochimica et Cosmochimica Acta, Supplement 2, Cambridge Mass.: MIT. http://adsabs.harvard.edu/full/1971LPSC....2.2265G
Material	Anorthite [ CaAl₂Si₂O₈ ] Anorthite specimen from the type locality at Somma-Vesuvius Complex, Naples Province, Campania, Italy. Size: 6.9 x 4.1 x 3.8 cm © 2010 Rob Lavinsky, iRocks.com, CC-BY-SA-3.0
Specimen temperature	Ambient
Technique	Unknown
Lines	Fe³⁺ 700 nm, Mn²⁺ 570 nm

Nominal composition of Anorthite [ CaAl₂Si₂O₈ ].
Element	Atoms	At%	Wt%
Ca	1	7.69	14.4
Al	2	15.4	19.4
Si	2	15.4	20.2
O	8	61.5	46