L’adélite est une espèce minérale formée d’arséniate de calcium et magnésium de formule Ca Mg (AsO4) (OH). Les cristaux sont de petite taille et n'excèdent pas 5mm[4].
8 PHOSPHATES, ARSENATES, VANADATES 8.B Phosphates, etc. with Additional Anions, without H2O 8.BH With medium-sized and large cations, (OH,etc.):RO4 = 1:1 8.BH.35 Austinite CaZn(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Adelite CaMg(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Duftite-alpha PbCu(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Duftite-beta? PbCu(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Conichalcite CaCu(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Gabrielsonite PbFe++(AsO4)(OH) Space Group P 21m Point Group mm2 8.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Tangeite CaCu(VO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Cobaltaustinite CaCo(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Arsendescloizite PbZn(AsO4)(OH) Space Group P 212121 Point Group 2 2 2 8.BH.35 Gottlobite CaMg(VO4,AsO4)(OH) Space Group P 212121 Point Group 2 2 2
The Handbook of Mineralogy Volume V, 2003 Mineralogical Society of America by Kenneth W. Bladh, Richard A. Bideaux, Elizabeth Anthony-Morton and Barbara G. Nichols
(en) Charles Palache, Harry Berman et Clifford Frondel, The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837–1892, vol.II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates,etc., New York (NY), John Wiley & Sons, , 7eéd., 1124p., p.806; Mineralogical Magazine (1998) 62 (3), 395-407