Archerite (IMA symbol: Aht[1]) is a phosphate mineral with chemical formula (K,NH4)H2PO4. It's named after Michael Archer (born 25 March 1945), professor of Biology, University of New South Wales. Its type locality is Petrogale Cave, Madura Roadhouse, Dundas Shire, Western Australia. It occurs in guano containing caves as wall encrustations and stalactites.[2][3][4]

Archerite
Archerite (white) on a biphosphammite crystal
General
CategoryMineral
Formula
(repeating unit)
(K,NH4)H2PO4
IMA symbolAht
Strunz classification8.AD.15
Dana classification37.1.4.2
Crystal systemTetragonal
Identification
ColorWhite
CleavageNone
FractureUneven
TenacityBrittle
Mohs scale hardness1-2
LusterSub-Vitreous, Waxy, Greasy
StreakWhite
DiaphaneityTranslucent
Specific gravity2.23
Density2.23 g/cm3

References

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  1. ^ Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ Webmineral - Archerite
  3. ^ Mindat.org - Archerite
  4. ^ "Handbook of Mineralogy - Archerite" (PDF). Archived from the original (PDF) on 2020-11-26. Retrieved 2013-01-26.