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  • Phosphate Rock Minerals Education Coalition

    Phosphate Rock. The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. The largest and least expensive source of phosphorus is obtained by mining and concentrating phosphate rock from the numerous phosphate deposits of the world. Some phosphate rock is used to make calcium phosphate nutritional

  • phosphate mineral Description, Uses, & Facts Britannica

    Phosphate mineral, any of a group of naturally occurring inorganic salts of phosphoric acid. Phosphates can be grouped as: primary phosphates that have crystallized from a liquid; secondary phosphates formed by the alteration of primary phosphates; and rock phosphates formed from phosphorous-bearing organic material.

  • Mineral Gallery the Phosphates Class

    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

  • 11 Hardest Minerals In The World On Mohs Scale RankRed

    Aug 15, 2020· More than 75 percent of the world’s reserves of phosphate rock are located in Western Sahara and Morocco. Its rock samples were also collected on Moon by astronauts during the Apollo program. 6. Orthoclase Feldspar. Orthoclase measuring 27*17 centimeter Mohs hardness: 6 Absolute hardness: 72. Chemical formula: KAlSi 3 O 8

  • Which Minerals Include Phosphate? ThoughtCo

    Feb 13, 2019· The main test of apatite is by its hardness, which is a 5 on the Mohs scale. Apatite can be cut as a gemstone, but it is relatively soft. Apatite also makes up sedimentary beds of phosphate rock. There it is a white or brownish earthy mass, and the mineral must be

  • Phosphates Minerals Information, Photos » Geology Science

    The phosphate minerals are characterized by way of the tetrahedral [PO4]three− unit, despite the fact that the structure can be generalized, and phosphorus is replaced by means of antimony, arsenic, or vanadium. The most common phosphate is the apatite group; not unusual species inside this organization are fluorapatite (Ca5(PO4)3F), chlorapatite (Ca5(PO4)3Cl) and hydroxylapatite

  • Mineral Gallery the Phosphates Class

    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

  • Physical Geology Science: Study of Earth Science, Rocks

    Phosphate rock and phosphorite are names used for sedimentary rocks that contain at least 15% to 20% phosphate on the basis of weight. The phosphorous content in these rocks is mainly derived from the presence of apatite minerals. Uses of Apatite as Phosphate Rock. Most of the phosphate rock mined throughout the world is used to produce

  • Mining Funda: Apatite, Phosphorite and Phosphate Rock

    Phosphate Rock and Phosphorite Phosphate rock and phosphorite are names used for sedimentary rocks that contain at least 15% to 20% phosphate on the basis of weight. The phosphorous content in these rocks is mainly derived from the presence of apatite minerals.

  • The Mohs Stone Hardness Scale [Infographic] Ian Knapper

    May 05, 2017· The Measurement of Hardness Scale is a useful tool in quickly determining the hardness of minerals in the field. It also provides insight into the durability of the stones that we work with. The hardness of the stone informs whether it will be suitable to create curved, cantilever or spiral staircases.Our own infographic shows where these stones fall in comparison to the other natural

  • Apatite: The mineral apatite information and pictures

    Apatite is the main source of phosphorus. Phosphorus was previously extracted from crystalline Apatite, but nowadays is extracted from enormous deposits of Apatite-rich rock. Apatite is essential in the manufacture of phosphate fertilizers, and is very important

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