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Fe2+SO4 · 4H2O
Colourless to white, ...
Vitreous, Dull
2 - 3
Member of:
Named after Zygmunt Rozenn (1874–1936), mineralogist and petrographer, Academy of Mining and Metallurgy, Kracow, Poland.
A common alteration product of iron sulphides (pyrite, marcasite, pyrrhotite).

Classification of Rozenite


7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations

6 : AXO4·xH2O

25 : Sulphates
10 : Sulphates of Fe alone

Physical Properties of Rozenite

Vitreous, Dull
Diaphaneity (Transparency):
Colourless to white, pale green
Hardness (Mohs):
2 - 3
2.293 g/cm3 (Measured)    2.29 g/cm3 (Calculated)

Optical Data of Rozenite

Biaxial (-)
RI values:
nα = 1.526 - 1.528 nβ = 1.536 - 1.537 nγ = 1.541 - 1.545
Measured: 90° , Calculated: 70° to 86°
Max Birefringence:
δ = 0.015 - 0.017
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r > v weak

Chemical Properties of Rozenite

IMA Formula:
Fe2+SO4 · 4H2O
Elements listed in formula:

Crystallography of Rozenite

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Space Group Setting:
Cell Parameters:
a = 5.979(4) Å, b = 13.648(4) Å, c = 7.977(3) Å
β = 90.26(10)°
a:b:c = 0.438 : 1 : 0.584
Unit Cell Volume:
V 650.93 ų (Calculated from Unit Cell)

Type Occurrence of Rozenite

Place of Conservation of Type Material:
Academy of Mining and Metallurgy, Kracow, Poland.

Relationship of Rozenite to other Species

Member of:
Other Members of Group:
Aplowite(Co,Mn,Ni)SO4 · 4H2O
Boyleite(Zn,Mg)SO4 · 4H2O
Ilesite(Mn,Zn,Fe)SO4 · 4H2O
StarkeyiteMgSO4 · 4H2O
7.CB.05DwornikiteNiSO4 · H2O
7.CB.05GunningiteZnSO4 · H2O
7.CB.05KieseriteMgSO4 · H2O
7.CB.05PoiteviniteCuSO4 · H2O
7.CB.05SzmikiteMn2+SO4 · H2O
7.CB.05SzomolnokiteFe2+SO4 · H2O
7.CB.05CobaltkieseriteCoSO4 · H2O
7.CB.07SanderiteMgSO4 · 2H2O
7.CB.10BonattiteCuSO4 · 3H2O
7.CB.15AplowiteCoSO4 · 4H2O
7.CB.15BoyleiteZnSO4 · 4H2O
7.CB.15IlesiteMn2+SO4 · 4H2O
7.CB.15StarkeyiteMgSO4 · 4H2O
7.CB.15DrobeciteCdSO4 · 4H2O
7.CB.15CranswickiteMgSO4 · 4H2O
7.CB.20ChalcanthiteCuSO4 · 5H2O
7.CB.20JôkokuiteMn2+SO4 · 5H2O
7.CB.20PentahydriteMgSO4 · 5H2O
7.CB.20Siderotil(Fe,Cu)SO4 · 5H2O
7.CB.25BianchiteZnSO4 · 6H2O
7.CB.25ChvaleticeiteMnSO4 · 6H2O
7.CB.25FerrohexahydriteFe2+SO4 · 6H2O
7.CB.25HexahydriteMgSO4 · 6H2O
7.CB.25MoorhouseiteCoSO4 · 6H2O
7.CB.25NickelhexahydriteNiSO4 · 6H2O
7.CB.30RetgersiteNiSO4 · 6H2O
7.CB.35BieberiteCoSO4 · 7H2O
7.CB.35BoothiteCuSO4 · 7H2O
7.CB.35MallarditeMn 2+SO4 · 7H2O
7.CB.35MelanteriteFe2+SO4 · 7H2O
7.CB.35ZincmelanteriteZnSO4 · 7H2O
7.CB.35Alpersite(Mg,Cu2+)SO4 · 7H2O
7.CB.40EpsomiteMgSO4 · 7H2O
7.CB.40GoslariteZnSO4 · 7H2O
7.CB.40MorenositeNiSO4 · 7H2O
7.CB.45AlunogenAl2(SO4)3(H2O)12 · 5H2O
7.CB.45Meta-alunogenAl2(SO4)3 · 14H2O
7.CB.50AluminocoquimbiteAlFe(SO4)3 · 9H2O
7.CB.55CoquimbiteFe23+(SO4)3 · 9H2O
7.CB.55ParacoquimbiteFe23+(SO4)3 · 9H2O
7.CB.55Rhomboclase(H3O)Fe3+(SO4)2 · 3H2O
7.CB.60KorneliteFe23+(SO4)3 · 7H2O
7.CB.65QuenstedtiteFe23+(SO4)3 · 11H2O
7.CB.70LauseniteFe23+(SO4)3 · 5H2O
7.CB.75LishizheniteZnFe23+(SO4)4 · 14H2O
7.CB.75RömeriteFe2+Fe23+(SO4)4 · 14H2O
7.CB.80RansomiteCuFe23+(SO4)4 · 6H2O
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2O
7.CB.85BíliniteFe2+Fe23+(SO4)4 · 22H2O
7.CB.85DietrichiteZnAl2(SO4)4 · 22H2O
7.CB.85HalotrichiteFe2+Al2(SO4)4 · 22H2O
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2O
7.CB.85RedingtoniteFe2+Cr2(SO4)4 · 22H2O
7.CB.85WupatkiiteCoAl2(SO4)4 · 22H2O
7.CB.90MeridianiiteMgSO4 · 11H2O
25.10.1SzomolnokiteFe2+SO4 · H2O
25.10.3Siderotil(Fe,Cu)SO4 · 5H2O
25.10.4FerrohexahydriteFe2+SO4 · 6H2O
25.10.5MelanteriteFe2+SO4 · 7H2O
25.10.6Rhomboclase(H3O)Fe3+(SO4)2 · 3H2O
25.10.7LauseniteFe23+(SO4)3 · 5H2O
25.10.8KorneliteFe23+(SO4)3 · 7H2O
25.10.9CoquimbiteFe23+(SO4)3 · 9H2O
25.10.10ParacoquimbiteFe23+(SO4)3 · 9H2O
25.10.11QuenstedtiteFe23+(SO4)3 · 11H2O
25.10.12FerricopiapiteFe3+0.67Fe43+(SO4)6(OH)2 · 20H2O
25.10.13MetahohmanniteFe23+O(SO4)2 · 4H2O
25.10.14HohmanniteFe23+O(SO4)2 · 8H2O
25.10.15ButleriteFe3+SO4(OH) · 2H2O
25.10.16ParabutleriteFe3+SO4(OH) · 2H2O
25.10.17AmarantiteFe23+O(SO4)2 · 7H2O
25.10.18FibroferriteFe3+SO4(OH) · 5H2O
25.10.20RömeriteFe2+Fe23+(SO4)4 · 14H2O
25.10.21BíliniteFe2+Fe23+(SO4)4 · 22H2O
25.10.22CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O

Other Names for Rozenite

Name in Other Languages:
Simplified Chinese:四水白铁矾
Traditional Chinese:四水白鐵礬

Other Information

Other Information:
Soluble in H2O
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Rozenite

Reference List:
Jambor, J.L. and Traill, R.J. (1963) On rozenite and siderotil. Canadian Mineralogist: 7: 751-763.

American Mineralogist (1964): 49: 820.

Acta Crystallographica: 15: 815-826.

Bayliss, P. (1987): Mineral nomenclature: rozenite. Mineral. Mag., 51, 176.

Peterson, R.C. (2003): Dehydration of mine waste. The relationship among melanterite FeSO4·7H2O, siderotil FeSO4·5H2O and rozenite FeSO4·4H2O. Geological Association of Canada-Mineralogical Association of Canada-Society of Economic Geologists Abstracts Volume 28: 134-135.

Internet Links for Rozenite URL:
Please feel free to link to this page.

Localities for Rozenite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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