Mineral Information and Data:

Meliphanite
Ca4(Na,Ca)4Be4AlSi7O24(F,O)4 [CNMNC approved formula]

Named from the Greek for "honey" and "to appear" in allusion to the color.

IMA status : Valid species (Pre-IMA 1852) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
55.04.02.05  
  (55) Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.04) with cations in [8] and lower coordination
  (55.04.02) Fresnoite group
  
Nickel-Strunz
(10th edition) :
09.DP.05
  (09) Silicates
  (09.D) Inosilicates* Structural terminology per Liebau (1985)
  (09.DP) Transitional ino-phyllosilicate structures
  
Crystal system: Tetragonal System
Point group (H-M): 4 — disphenoidal
  
  
  
Other Properties: Gemstone Extremely Rare.

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