{{Infobox mineral | name = Aldermanite | boxwidth = | boxbgcolor = | image = File:Aldermanite.jpg | imagesize = | alt = | caption = | category = Phosphate minerals | formula = {{nowrap|[Mg(H<sub>2</sub>O)<sub>6</sub>][Na(H<sub>2</sub>O)<sub>2</sub>Al<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>(OH,F)<sub>6</sub> · H<sub>2</sub>O}} |IMAsymbol=Adm<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> | molweight = | strunz = | dana = | system = Monoclinic | class = 2/''m'' - Prismatic | symmetry = | unit cell = | color = Colorless | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = Brittle | toughness = | mohs = 2 | luster = Sub-vitreous, pearly | streak = | diaphaneity = | gravity = | density = 2.1 g cm<sup>−1</sup> (calculated) | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | Curie temp = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = <ref name=Mindat/> | var1 = | var1text = }}
'''Aldermanite''' is a rare hydrated phosphate mineral with formula Mg<sub>5</sub>Al<sub>12</sub>(PO<sub>4</sub>)<sub>8</sub>(OH)<sub>22</sub>·32H<sub>2</sub>O.<ref>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] {{Webarchive|url=https://web.archive.org/web/20160303174221/http://www.minersoc.org/pages/Archive-MM/Volume_44/44-333-59.htm |date=2016-03-03 }}</ref><ref name=Mindat>http://www.mindat.org/min-104.html Mindat</ref><ref>https://www.handbookofmineralogy.org/pdfs/aldermanite.pdf Handbook of Mineralogy</ref> 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== <references/>
Category:Phosphate minerals Category:Aluminium minerals Category:Magnesium minerals Category:Orthorhombic minerals
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