Geology

Geology

The scientific study of the origin, history, and physical features of the earth.

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Geology > Minerals

archerite

Geology; Minerals

Archerite is a phosphate mineral with chemical formula (K,NH 4 )H 2 PO 4 . It's named after Michael Archer (born 25 March 1945), professor of Biology, University of New South ...

chromium

Geology; Minerals

Chromium is a chemical element which has the symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard and brittle metal which takes ...

akrochordite

Geology; Minerals

Akrochordite is an exceptionally rare hydrated hydrous arsenate mineral of the formula (Mn,Mg) 4 (AsO 4 ) 2 (OH) 4 . 4H 2 O and represents a small group of rare in the nature ...

bukovskyite

Geology; Minerals

Bukovskyite (also known as "clay of Kutná Hora") is an iron arsenate sulfate mineral with formula: Fe 2 (AsO 4 )(SO 4 )(OH)·7H 2 O which forms nodules with a reniform ...

charoite

Geology; Minerals

Charoite (K(Ca;Na) 2 Si 4 O 10 (OH;F)·H 2 O) is a rare silicate mineral, first described in 1978 and named for the Chara River. It has been reported only from the Sakha Republic, ...

hureaulite

Geology; Minerals

Hureaulite is a manganese phosphate with the formula Mn 2+ 5 (PO 3 OH) 2 (PO 4 ) 2 ·4H 2 O. It was discovered in 1825 and named in 1826 for the type locality, Les Hureaux, ...

pearceite

Geology; Minerals

Pearceite is one of the four so-called "ruby silvers", pearceite Cu(Ag,Cu) 6 Ag 9 As 2 S 11 , pyrargyrite Ag 3 SbS 3 , proustite Ag 3 AsS 3 and miargyrite AgSbS 2 . It was ...