Mineral Information and Data:

Grossite
CaAl4O7 [CNMNC approved formula]

Named for Shulamit Gross (1923- ), Geological Survey of Israel, Jerusalem, Israel, who noted the species in the Hatrurim Formation, Israel.

IMA status : Approved Species 1994 ()
CLASSIFICATION 
Dana
(8th edition) :
07.03.02.01  
  (07) Multiple Oxides
  (07.03) with 2+ and higher charged cations
  (07.03.02)
  
Nickel-Strunz
(10th edition) :
04.CC.15
  (04) Oxides and Hydroxides
  (04.C) Metal:Oxygen = 2:3, 3:5, and Similar
  (04.CC) With large and medium-sized cations
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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