Argentojarosite

{{Infobox mineral

| name = Argentojarosite

| category = Sulfate mineral

| image = Argentojarosite 2 w- carminite arseniosiderite and quartz Basic silver iron sulfate Santa Ana Sonora Mexico 2030.jpg

| imagesize = 260 px

| alt =

| caption = Argentojarosite found in Sonora, Mexico

| formula = AgFe{{sup|3+}}{{sub|3}}(SO{{sub|4}}){{sub|2}}(OH){{sub|6}}

|IMAsymbol=Agjrs{{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}}

| molweight =

| strunz = 7.BC.10

| dana = 30.2.5.5

| system = Trigonal

| class = Ditrigonal pyramidal (3m)

| symmetry = R3m

| unit cell =

| color = Yellow, yellow-brown, brown

| habit = Coatings, fine-grained masses

| twinning =

| cleavage = {0001} distinct

| fracture =

| tenacity =

| mohs = 3.5-4.5

| luster = Vitreous

| refractive =

| opticalprop = Uniaxial (-)

| birefringence =

| 2V =

| pleochroism = Dichroic,
O: Yellow,
E: Pale yellow

| streak = Light yellow

| gravity = 3.66

| density = 3.66 (measured), 3.81 (calculated)

| melt =

| fusibility =

| diagnostic =

| solubility =

| diaphaneity =

| other =

| references =

}}

Argentojarosite is an iron sulfate mineral with the chemical formula AgFe{{sup|3+}}{{sub|3}}(SO{{sub|4}}){{sub|2}}(OH){{sub|6}}. It is one of few iron sulfate minerals containing silver in its chemical formula as a dominant element.[https://mindat.org/min-290.html Argentojarosite] {{Webarchive|url=https://web.archive.org/web/20190406020533/https://www.mindat.org/min-290.html |date=2019-04-06 }} on mindat.org Its type locality is the East Tintic Mountains, Utah.[http://webmineral.com/data/Argentojarosite.shtml Argentojarosite data sheet]