page_title: Hubeite
section_title: Geological occurrence
hierarchical_section_title: Hubeite / Geological occurrence
caption_attribution_description: English: Hubeite, Inesite, Quartz Locality: Fengjiashan Mine (Daye Copper mine), Edong Mining District, Daye County, Huangshi Prefecture, Hubei Province, China (Locality at mindat.org) A sparkly coating of hubeite, apophyllite, and secondary quartz microcrystals makes this large quartz point really spectacular! The photos do no accurately show how sparkly and just darned beautiful this specimen is. A few inesite clusters add an extra accent. NOT your average quartz crystal! The sparkles cover 4 faces of the 6-sided quartz point. The other two faces are normal, glassy quartz as youd expect. 14 x 6 x 5 cm Deutsch: Hubeit, Inesit, Quarz Fundort: Fengjiashan Mine (Daye Copper mine), Distrikt Edong Mining, Daye County, Präfektur Huangshi, Hubei, China (Fundort bei mindat.org)
context_page_description: The mineral hubeite, Ca
  ₂Mn²⁺
  Fe³⁺
  [Si
  ₄O
  ₁₂]·
  ₂, is a sorosilicate of the Si
  ₄O
  ₁₃ group. Structurally it also belongs to the Akatoreite group. It was found and named after the province of Hubei, China. It is common to iron ores in a mine of that region. It occurs mainly as aggregates of fan like crystals. It is dark to pale brown, has orange-brown streak and is vitreous. Hubeite has a hardness of 5.5 in the Mohs scale, one good cleavage and conchoidal fracture. It is triclinic with a space group of P1*. The structure of hubeite is very uncommon, and in fact there is only one other mineral that fits the Si
  ₄O
  ₁₃ group, which is ruizite.
context_section_description: Hubeite is mainly associated to a skarn assemblage with pink inesite, colorless apophyllite, quartz, pyrite and colorless-white calcite (Hawthorne et al., 2004). They all occur together at the Daye Mine. Usually hubeite appears in two different situations. It may occur as isolated aggregates of crystals perched on white quartz, or it may occur covering both sides of thick specimens, that are usually pink inesite and apophyllite (Hawthorne et al., 2002). Figures 3 and 4 illustrate both situations. 
   
  The localities where ruizite is found, associated with apophyllite, inesite and pyrite as well, and there is no hubeite, which leads the conclusion that hubeite needs oxidized environments and sufficient concentration of iron to occur.
  The Daye mine is an iron ore deposit (Dingyu et al., 1982). This specific area is characterized by deposits of late Paleozoic carbonate rocks in contact with plutons aging between the middle Jurassic to middle Cretaceous (Dingyu et al., 1982). According to Dingyu et al. (1982), the iron rich magma injections are the main cause for the formation of the ore deposits of the region. These polymetallic deposits form a belt that crosses China in the west–east direction (Ottens, 2007). Curiously, the mine where hubeite was first found is in fact a wollastonite source for minerals collectors.
caption: Fig 3 -Hubite occurrence on quartz
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