Aldermanite Explained

Aldermanite
Category:	Phosphate minerals
Imasymbol:	Adm^[1]
System:	Monoclinic
Class:	2/m - Prismatic
Color:	Colorless
Tenacity:	Brittle
Mohs:	2
Luster:	Sub-vitreous, pearly
Density:	2.1 g cm^−1 (calculated)

Aldermanite is a rare hydrated phosphate mineral with formula Mg₅Al₁₂(PO₄)₈(OH)₂₂·32H₂O.^{[2] [3] [4]} It is named after Arthur Richard Alderman (1901–1980), Professor of Geology and Mineralogy, University of Adelaide. Its type locality is Moculta Phosphate Quarry (Klemm's Quarry), Angaston, Barossa Valley, North Mount Lofty Ranges, Mount Lofty Ranges, South Australia, Australia.

References

1. Warr. L.N.. 2021. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3. 291–320. 10.1180/mgm.2021.43. 2021MinM...85..291W. 235729616. free.
2. Harrowfield I. R., Segnit E. R. and Watts J. A. 1981: Aldermanite, a New Magnesium Aluminium Phosphate. Mineralogical Magazine, 44(333), 59-62 - http://www.minersoc.org/pages/Archive-MM/Volume_44/44-333-59.htm
3. http://www.mindat.org/min-104.html Mindat
4. http://www.handbookofmineralogy.org/pdfs/aldermanite.pdf Handbook of Mineralogy