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…
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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.…
Express of a Simple Quadratic Surd
A root of a positive real quantity is called a surd if its value cannot be exactly determined. It is a number that can’t be…
Freibergite: Properties and Occurrences
Freibergite is a complex sulfosalt mineral of silver, copper, iron, antimony and arsenic with formula (Ag, Cu, Fe)12(Sb, As)4S13. It is a complex cubic sulfosalt…
Franklinphilite
Franklinphilite is a phyllosilicate of the stilpnomelane group. It is a triclinic mineral containing aluminum, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, sodium, and zinc.…
Franklinite: Properties and Occurrences
Franklinite is an oxide mineral belonging to the normal spinel subgroup’s iron (Fe) series, with the formula ZnFe3+2O4. It is one of the minerals found…
Frankhawthorneite
Frankhawthorneite, formula- Cu2Te6+O4(OH)2 is a monoclinic copper tellurate mineral named after Prof. Frank Christopher Hawthorne (born 1946), University of Manitoba, Winnipeg, Canada. Hawthorne has been…
Frankdicksonite
Frankdicksonite is a halide mineral with the chemical formula BaF2 which corresponds to the chemical compound barium fluoride. It is an isometric-hexoctahedral colorless mineral containing…
Frankamenite
Frankamenite is the fluorine-dominate variation of the rare mineral canasite with a general formula of K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O). It is a triclinic-pedial mineral containing calcium, fluorine, hydrogen,…
Comparison of Surds
Definitions of surds: A root of a positive real quantity is called a surd if its value cannot be exactly determined. It is a number that…
Franckeite: Properties and Occurrences
Franckeite, chemical formula Pb5Sn3Sb2S14, belongs to a family of complex sulfide minerals. It is a triclinic-pinacoidal mineral containing antimony, iron, lead, sulfur, and tin. It…
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