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Bayleyite

• 
  Hideout Mine (Hideout No. 1 Mine), Deer Flat, White Canyon, White Canyon District, San Juan Co., Utah, USA
  © 2008, JGW

• Formula:
  Mg₂(UO₂)(CO₃)₃ · 18H₂O

• System: Monoclinic

• Name:
  Named after William S. Bayley (1861-1943), American mineralogist and geologist.

• IMA Status: Valid (Grandfathered)

• Type Locality:
  Hillside Mine (Happy Jack MS 920 claim; Camp MS 919 claim; Seven Stars MS 916 claim), Bozarth Mesa, Bagdad, Eureka District, Yavapai Co., Arizona, USA

• Dana 8th: 15.3.3.1
  
  15 : HYDRATED NORMAL CARBONATES
  3 : A_mB_n(XO₃)_p·xH₂O, with (m+n):p = 1:1

• Density: 2.05 g/cm³ (measured)
  2.06 g/cm³ (calculated)

• Diapheny: Translucent

• Colour: Yellow, whitish yellow