Jarosite : CSIRO Spectroscopy Database

Jarosite [ KFe^III₃(SO₄)₂(OH)₆ ]

Image of Jarosite

Jarosite from Jaroso Ravine, Sierra Almagrera, Cuevas de Almanzora, Almería, Andalusia, Spain. Picture width 2 mm. Collection and photograph Christian Rewitzer.

(C) 2010 Christian Rewitzer (via Wikimedia Commons) CC-BY-SA-3.0

Material properties

Formula	KFe^III₃(SO₄)₂(OH)₆
Abbreviation	Jrs
Classifications	Minerals containing SO4, Minerals containing OH
Luminescence emitters	M[n]OH, SO4
IMA Status	Approved/redefined (IMA 1987 s.p.)
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags	Hydroxide , Mineral, Sulphate

Composition

Element	Atoms
H	6
K	1
Fe	3
O	14
S	2
Total:	26

Reference for Jarosite

Laukamp et al. 2021

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Specimens of Jarosite

Name	Owner	Materials	Phase purity	Image
M1234 Jarosite	CSIRO	Jarosite (97.0%), Quartz	97.0	M1234 Jarosite Image of Jarosite and Quartz in specimen 'M1234 Jarosite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M2456 Quartz / Jarosite	CSIRO	Goethite, Jarosite (28.9%), Natrojarosite, Quartz	28.9	M2456 Quartz / Jarosite Image of Quartz, Goethite, Jarosite and Natrojarosite in specimen 'M2456 Quartz / Jarosite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M1855 Chalcopyrite / Quartz	CSIRO	Chalcopyrite, Clinochlore, Fe, Fluorite, Jarosite (3.9%), Pyrite, Quartz	3.9	M1855 Chalcopyrite / Quartz Image of Chalcopyrite, Clinochlore (var. Fe), Fluorite, Jarosite, Pyrite and Quartz in specimen 'M1855 Chalcopyrite / Quartz' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M2601 Pyrite / Chalcopyrite / Siderite	CSIRO	Chalcopyrite, Jarosite (3.9%), Pyrite, Siderite	3.9	M2601 Pyrite / Chalcopyrite / Siderite Image of Pyrite, Chalcopyrite, Jarosite and Siderite in specimen 'M2601 Pyrite / Chalcopyrite / Siderite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M1847 Chalcopyrite / Dolomite	CSIRO	Chalcopyrite, Dolomite, Jarosite (3.7%), Pyrrhotite-4M, Quartz	3.7	M1847 Chalcopyrite / Dolomite Image of Chalcopyrite, Dolomite, Jarosite, Pyrrhotite-4M and Quartz in specimen 'M1847 Chalcopyrite / Dolomite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M0315 Chalcopyrite / Pyrite	CSIRO	Chalcopyrite, Jarosite (3.2%), Pyrite, Siderite, Szomolnokite	3.2	M0315 Chalcopyrite / Pyrite Image of Chalcopyrite, Jarosite, Pyrite, Siderite and Szomolnokite in specimen 'M0315 Chalcopyrite / Pyrite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M2657 Chalcopyrite / Marcasite / Pyrite	CSIRO	Chalcopyrite, Goethite, Jarosite (2.9%), Marcasite, Pyrite	2.9	M2657 Chalcopyrite / Marcasite / Pyrite Image of Chalcopyrite, Goethite, Jarosite, Marcasite and Pyrite in specimen 'M2657 Chalcopyrite / Marcasite / Pyrite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M0324 Chalcopyrite / Quartz	CSIRO	Chalcopyrite, Jarosite (2.4%), Quartz	2.4	M0324 Chalcopyrite / Quartz Image of Chalcopyrite, Jarosite and Quartz in specimen 'M0324 Chalcopyrite / Quartz' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M0317 Chalcopyrite	CSIRO	Chalcopyrite, Jarosite (2.1%), Quartz	2.1	M0317 Chalcopyrite Image of Chalcopyrite, Jarosite and Quartz in specimen 'M0317 Chalcopyrite' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.
M2773 Chalcopyrite	CSIRO	Chalcopyrite, Jarosite (2.1%), Pyrite	2.1	M2773 Chalcopyrite Image of Chalcopyrite, Jarosite and Pyrite in specimen 'M2773 Chalcopyrite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M2780 Chalcopyrite / Arsenopyrite / Siderite	CSIRO	Arsenopyrite, Chalcopyrite, Jarosite (1.9%), Pyrite, Siderite	1.9	M2780 Chalcopyrite / Arsenopyrite / Siderite Image of Chalcopyrite, Arsenopyrite, Jarosite, Pyrite and Siderite in specimen 'M2780 Chalcopyrite / Arsenopyrite / Siderite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M0319 Chalcopyrite	CSIRO	Chalcopyrite, Jarosite (1.8%), Pyrite, Stilpnomelane	1.8	M0319 Chalcopyrite Image of Chalcopyrite, Jarosite, Pyrite and Stilpnomelane in specimen 'M0319 Chalcopyrite' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.
M0334 Pyrite / Muscovite	CSIRO	Chamosite-1MIIb, Jarosite (1.7%), Muscovite-1M, Muscovite-2M1, Pyrite, Quartz, Szomolnokite	1.7	M0334 Pyrite / Muscovite Image of Pyrite, Chamosite-1MIIb, Jarosite, Muscovite-1M, Muscovite-2M1, Quartz and Szomolnokite in specimen 'M0334 Pyrite / Muscovite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
M1873 Chalcopyrite	CSIRO	Chalcopyrite, Clinochlore, Fe, Jarosite (1.2%)	1.2	M1873 Chalcopyrite Image of Chalcopyrite, Clinochlore (var. Fe) and Jarosite in specimen 'M1873 Chalcopyrite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.