Mineral Information and Data:

Alsakharovite-Zn
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 • 7H2O [CNMNC approved formula]

Named for Aleksey S. Sakharov (1910-1996), Russian geologist who studied the Lovozero alkaline massif.

IMA status : Approved Species 2003 (IMA2002-003)
CLASSIFICATION 
Dana
(8th edition) :
60.01.03f.02  (This Dana# Added)
  (60) Cyclosilicate Four-Membered Rings
  (60.01) as Titanosilicates
  (60.01.03f) Labuntsovite Group (Gutkovaite subgroup Monoclinic [Cm])
  
Nickel-Strunz
(10th edition) :
09.CE.30h
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CE) [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
  
Crystal system: Monoclinic System
Point group (H-M): m — domatic
Crystal Habit: Crystals prismatic; tabular
  
Color: White, pale brown, colorless
Diaphaneity: Translucent to transparent
Luster: Vitreous
Hardness (Mohs): 5
Measured Density: 2.9 g/cm3
Tenacity: Brittle
Fracture: Uneven
  
Geologic Setting: Hydrothemal mineral in cavities of a eudialyte-aegirine-feldspar pegmatite.
  

 

Alsakharovite-Zn
Light brown crystal fragment of alsakharovite-Zn.
Origin: Lepkhe Nelm Mountain, Lovozero, Kola Peninsula, Russia.
Sample size: Crystal size 2 mm
Photo: Thomas Witzke

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