• Phosphate mineral - Wikipedia

    en.wikipedia.org/wiki/Phosphate_minerals Phosphate minerals contain the tetrahedrally coordinated phosphate (PO 4 3−) anion along sometimes with arsenate (AsO 4 3−) and vanadate (VO 4 3−) substitutions. Chlorine (Cl −), fluorine (F −), and hydroxide (OH −) anions that also fit into the crystal structure.. The phosphate class of minerals is a large and diverse group, however, only a few species are relatively common.
  • phosphate mineral | Description, Uses, & Facts | Britannica

    www.britannica.com/science/phosphate-mineral Phosphate mineral, any of a group of naturally occurring inorganic salts of phosphoric acid, H 3 (PO 4). More than 200 species of phosphate minerals are recognized, and structurally they all have isolated (PO 4) tetrahedral units.
  • Category:Phosphate minerals - Wikipedia

    en.wikipedia.org/wiki/Category:Phosphate_minerals Phosphate minerals contain the phosphate, PO 4 3−, anion.. In standard mineral classification systems (in both the Dana and Strunz systems) the phosphate class includes the arsenates, vanadates and the polyvanadates. Strunz includes the vanadates(V, VI) in the oxides class.. Subcategories. This category has only the following subcategory.
  • Phosphate Mineral - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/earth-and-planetary-sciences/phosphate-mineral In the phosphate minerals within this broad grouping, the main cations, which may be either monovalent, divalent, or trivalent, are coordinated to varying numbers of oxygen atoms to form polyhedra, which are then linked in various ways, commonly through (PO 4) tetrahedra, to form chains.Chains are then linked to form sheets, which stack in various crystallographic directions.
  • Mineral Gallery - the Phosphates Class

    www.galleries.com/Phosphates The Phosphate Class is made up of minerals with a basic chemical unit of tetrahedral (AO4) groups with a negative three (-3) charge.The A can be either Phosphorus, Arsenic, Vanadium or Antimony. The basic chemical unit can be combined with metal ions on a one to one ratio or usually in more complex combinations with other ions such as hydroxide groups (OH), uranyl groups (UO2), a halogen or ...
  • Which Minerals Include Phosphate? - ThoughtCo

    www.thoughtco.com/what-are-phosphate-minerals-4123032 Apatite is a family of minerals centered around fluorapatite, or calcium phosphate with a bit of fluorine, with the formula Ca 5 (PO 4) 3 F. Other members of the apatite group have chlorine or hydroxyl that take the place of the fluorine; silicon, arsenic or vanadium replace the phosphorus (and carbonate replace the phosphate group); and strontium, lead, and other elements substitute for the ...
  • Phosphate Mineral Group - Mineral Processing & Metallurgy

    www.911metallurgist.com/blog/phosphate-minerals-group The Phosphate Mineral Group includes a number of the rarer minerals and apatite. Pitchblende or Uraninite is of Color, pitchy black, greenish, or brownish black; powder, brownish black, grayish, greenish; luster, dull and pitchy, sometimes slightly metallic. H = 5.5; G = 9 to 9.7; no cleavage; contains uranium, radium, etc. Found in pegmatite granite dikes, and also, in some cases, with ores ...
  • Phosphate Minerals | J.O. Nriagu | Springer

    www.springer.com/gp/book/9783642617386 Indeed, many pegmatitic phosphate minerals have acquired some notoriety because of the rarer trace metals which they tend to accumulate. With the commercialization of phosphate fertilizers since the early part of the 19th century, phosphate minerals have assumed an important role in industrial chemistry and agriculture.
  • Phosphate Minerals - University of Wisconsin–Madison

    soils.wisc.edu/facstaff/barak/temp/soil8510/notes/phosphates.html Phosphate minerals comprise only a fractional percentage of the soil mass, perhaps averaging 0.02% or so, which impedes their direct identification by optical microscopy and x-ray analysis unless their concentration has been locally increased by addition of phosphate fertilizers.
  • The Phosphates - Rocks And Minerals 4 U

    www.rocksandminerals4u.com/phosphates.html Phosphates. The phosphate minerals contain phosphorus and oxygen in a 1:4 ratio. Written as PO 4 this compound combines with other elements to form phosphates.. The three mineral examples listed below are some of the more common members of this class.