Gananite: Properties and Occurrences
Gananite is a rare bismuth fluoride mineral form of bismuth trifluoride with a general formula of BiF3. It is an isometric-hextetrahedral gray mineral containing bismuth…
Geographic Minerals
Galkhaite: Properties and Occurrences
Galkhaite is a rare and chemically complex sulfosalt mineral from a group of natural thioarsenites. It is an isometric-hextetrahedral mineral containing antimony, arsenic, cesium, copper,…
Galena: Properties sand Occurrences
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide. It is the most important ore of lead and an important source…
Galaxite: Properties and Occurrences
Galaxite, also known as ‘mangan-spinel’ is an isometric mineral belonging to the spinel group of oxides with the ideal chemical formula Mn2+Al2O4. It is a…
Gahnite: Properties and Occurrences
Gahnite, formula- ZnAl2O4, is a rare mineral belonging to the spinel group. It forms octahedral crystals which may be green, blue, yellow, brown or grey.…
Gagarinite-(Ce)
Gagarinite-(Ce) previously zajacite-(Ce) is a rare radioactive fluoride mineral with formula Na(REExCa1-x)(REEyCa1-y)F6. REE refers to rare-earth elements, mostly those belonging to the lanthanide series. It…
Gadolinite: Properties and Occurrences
Gadolinite, sometimes known as ytterbite, is a silicate mineral consisting principally of the silicates of cerium, lanthanum, neodymium, yttrium, beryllium, and iron with the formula…
Gabrielite: Properties and Occurrences
Gabrielite is a rare thallium sulfosalt mineral with a chemical formula of Tl6Ag3Cu6(As, Sb)9S21 or Tl2AgCu2As3S7. It is a triclinic-pinacoidal black mineral containing antimony, arsenic,…
Francolite
Francolite is a carbonate-rich variety of the mineral fluorapatite and is present in most sedimentary phosphorites. It is a variety of apatite. It is the…
Fassaite: Properties and Occurrences
Fassaite is a variety of augite with a very low iron content, Ca(Mg, Fe, Al)(Si, Al)2O6. It is a mineral consisting of a pale green…
Fukuchilite: Properties and Occurrences
Fukuchilite, Cu3FeS8, is a copper iron sulfide named after the Japanese mineralogist Nobuyo Fukuchi (1877–1934). It is a copper iron sulphide, believed by some to…
Freieslebenite
Freieslebenite is a sulfosalt mineral composed of antimony, lead, and silver. Sulfosalt minerals are complex sulfide minerals in the formula: AmBnSp. The formula is AgPbSbS3.…
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