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(Zn,Mg)SO4 · 4H2O
Member of:
Named after Dr. Robert William Boyle (June 3rd 1920–August 5th, 2003), Canadian geochemist, Geological Survey of Canada, Ottawa, Canada.
Rozenite Group.

Soluble in water; slowly alters to gunningite in a dry atmosphere.

Classification of Boyleite


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
5 : Sulphates of Zn and Hg

Physical Properties of Boyleite

Hardness (Mohs):
None Observed
2.41 g/cm3 (Calculated)

Optical Data of Boyleite

Biaxial (-)
RI values:
nα = 1.522 nβ = 1.531 nγ = 1.536
Measured: 70° , Calculated: 72°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
relatively strong

Chemical Properties of Boyleite

(Zn,Mg)SO4 · 4H2O
IMA Formula:
ZnSO4 · 4H2O
Elements listed in formula:

Crystallography of Boyleite

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 5.95 Å, b = 13.60 Å, c = 7.96 Å
β = 90.4°
a:b:c = 0.438 : 1 : 0.585
Unit Cell Volume:
V 644.11 ų (Calculated from Unit Cell)
P 21/n

Type Occurrence of Boyleite

General Appearance of Type Material:
reniform masses
Geological Setting of Type Material:
alteration of sphalerite

Relationship of Boyleite to other Species

Member of:
Other Members of Group:
Aplowite(Co,Mn,Ni)SO4 · 4H2O
Ilesite(Mn,Zn,Fe)SO4 · 4H2O
RozeniteFeSO4 · 4H2O
StarkeyiteMgSO4 · 4H2O
7.CB.05Dwornikite(Ni,Fe)SO4 · H2O
7.CB.05GunningiteZnSO4 · H2O
7.CB.05KieseriteMgSO4 · H2O
7.CB.05Poitevinite(Cu,Fe,Zn)SO4 · H2O
7.CB.05SzmikiteMnSO4 · H2O
7.CB.05SzomolnokiteFeSO4 · H2O
7.CB.05CobaltkieseriteCoSO4 · H2O
7.CB.07SanderiteMgSO4 · 2H2O
7.CB.10BonattiteCuSO4 · 3H2O
7.CB.15Aplowite(Co,Mn,Ni)SO4 · 4H2O
7.CB.15Ilesite(Mn,Zn,Fe)SO4 · 4H2O
7.CB.15RozeniteFeSO4 · 4H2O
7.CB.15StarkeyiteMgSO4 · 4H2O
7.CB.15DrobeciteCdSO4 · 4H2O
7.CB.15CranswickiteMgSO4 · 4H2O
7.CB.20ChalcanthiteCuSO4 · 5H2O
7.CB.20JôkokuiteMnSO4 · 5H2O
7.CB.20PentahydriteMgSO4 · 5H2O
7.CB.20SiderotilFeSO4 · 5H2O
7.CB.25Bianchite(Zn,Fe)SO4 · 6H2O
7.CB.25Chvaleticeite(Mn,Mg)SO4 · 6H2O
7.CB.25FerrohexahydriteFeSO4 · 6H2O
7.CB.25HexahydriteMgSO4 · 6H2O
7.CB.25Moorhouseite(Co,Ni,Mn)SO4 · 6H2O
7.CB.25Nickelhexahydrite(Ni,Mg,Fe)SO4 · 6H2O
7.CB.30RetgersiteNiSO4 · 6H2O
7.CB.35BieberiteCoSO4 · 7H2O
7.CB.35BoothiteCuSO4 · 7H2O
7.CB.35MallarditeMnSO4 · 7H2O
7.CB.35MelanteriteFeSO4 · 7H2O
7.CB.35Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2O
7.CB.35Alpersite(Mg,Cu)[SO4] · 7H2O
7.CB.40EpsomiteMgSO4 · 7H2O
7.CB.40GoslariteZnSO4 · 7H2O
7.CB.40MorenositeNiSO4 · 7H2O
7.CB.45AlunogenAl2(SO4)3 · 17H2O
7.CB.45Meta-alunogenAl2(SO4)3 · 12H2O
7.CB.50AluminocoquimbiteFeAl(SO4)3 · 9H2O
7.CB.55CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
7.CB.55ParacoquimbiteFe2(SO4)3 · 9H2O
7.CB.55Rhomboclase(H5O2)Fe3+(SO4)2 · 2H2O
7.CB.60KorneliteFe2(SO4)3 · 7H2O
7.CB.65QuenstedtiteFe2(SO4)3 · 11H2O
7.CB.75LishizheniteZnFe2(SO4)4 · 14H2O
7.CB.75RömeriteFe2+Fe23+(SO4)4 · 14H2O
7.CB.80RansomiteCuFe2(SO4)4 · 6H2O
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2O
7.CB.85BíliniteFe2+Fe23+(SO4)4 · 22H2O
7.CB.85Dietrichite(Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O
7.CB.85HalotrichiteFeAl2(SO4)4 · 22H2O
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2O
7.CB.90MeridianiiteMgSO4 · 11H2O
25.5.2GoslariteZnSO4 · 7H2O
25.5.3NamuwiteZn4(SO4)(OH)6 · 4H2O
25.5.4KtenasiteZn(Cu,Zn)4(SO4)2(OH)6 · 6H2O
25.5.5Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2O
25.5.7SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
25.5.8OrthoserpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
25.5.9ZincaluminiteZn6Al6(SO4)2(OH)16 · 5H2O
25.5.10Glaucocerinite(Zn1-xAlx)(OH)2(SO4)x/2 · nH2O
25.5.11GunningiteZnSO4 · H2O
25.5.12ChaidamuiteZnFe3+(SO4)2(OH) · 4H2O
25.5.13Bianchite(Zn,Fe)SO4 · 6H2O
25.5.15Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2O
25.5.16Zincobotryogen(Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O

Other Names for Boyleite

Name in Other Languages:

Other Information

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 Boyleite

Reference List:
Walenta, K. (1978): Boyleit, ein neues Sulfatmineral von Kropbach im südlichen
Schwarzwald. Chem. Erde. 37, 73–79.

American Mineralogist (1979): 64, 241, 464.

A. J. Blake, P. A. Cooke, P. Hubberstey and C. L. Sampson (2001): Zinc(II) sulfate tetrahydrate. Acta Crystallographica E57, i109-i111.

Anderson, J. L., Peterson, R. C., & Swainson, I. (2012). The atomic structure of deuterated boyleite ZnSO4· 4D2O, ilesite MnSO4· 4D2O, and bianchite ZnSO4· 6D2O. American Mineralogist, 97(11-12), 1905-1914.

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

Localities for Boyleite

This 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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • San Juan
    • Iglesia Department
Bengochea, L., Lara, R. y Mas, G., 1996. Kalinita y boyleita. Sulfatos secundarios del Área Valle del Cura; San Juan. 3ra Reunión de Mineralogía y Metalogenia. Instituto de Recursos Minerales, UNLP. Publicación 5: 63-66.
  • New South Wales
    • Clive Co.
      • Clive
Anderson, J. L., Peterson, R. C., & Swainson, I. (2012). The atomic structure of deuterated boyleite ZnSO4· 4D2O, ilesite MnSO4· 4D2O, and bianchite ZnSO4· 6D2O. American Mineralogist, 97(11-12), 1905-1914.
  • New Brunswick
    • Gloucester Co.
      • Bathurst Parish
        • Bathurst Mining Camp
Anderson, J. L., Peterson, R. C., & Swainson, I. (2012). The atomic structure of deuterated boyleite ZnSO4· 4D2O, ilesite MnSO4· 4D2O, and bianchite ZnSO4· 6D2O. American Mineralogist, 97(11-12), 1905-1914.
  • Nunavut
    • Baffin Island
      • Nanisivik
[MinRec 21:533]
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
CMMA Micro-News 41-1 (2007) W. Henderson & L. Horvath
  • Yukon
    • Mayo Mining District
Handbook of Mineralogy
Czech Republic
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Kutná Hora (Kuttenberg)
Pauliš P., Malíková R., Pour O. (2015) Boyleit z odvalů staročeského pásma na Kaňku u Kutné Hory (Česká republika). Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 23, 1, 43-45. ISSN 1211-0329.
Germany (TL)
  • Baden-Württemberg
    • Black Forest
      • Münstertal
        • Kropbach
WALENTA, K. (1978): Boyleit, ein neues Sulfatmineral von Kropbach in Südlichen Schwarzwald. Chemie der Erde 37, Heft 1, 73-79.
  • Lower Saxony
    • Harz
      • Goslar
        • Rammelsberg
Jambor J L, Boyle R W (1962) Gunningite, a new zinc sulphate from the Keno Hill – Galena Hill area, Yukon, The Canadian Mineralogist 7, 209-218
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Sounion area
Blaß, G., Fabritz, K. H., Mühlbauer, W. and Prachar, I. (1998): … Immer wieder Neues aus Lavrion (2). Mineralien-Welt 9 (6), 48-55 (in German).
Lapis, 24, 7/8 (1999)
  • Co. Kilkenny
    • Johnstown
Balassone, G., Rossi, M., Boni, M., Stanley, G., and McDermott, P. (2008): Ore Geology Reviews 33, 168-186.
  • Campania
    • Benevento Province
      • Cusano Mutri
Del Prete S., Mele R., Allocca F., Bocchino B. (2002): Le miniere di bauxite di Cusano Mutri (Monti del Matese, Campania). Opera Ipogea, 4, 1, 3-44.
  • Sardinia
    • Cagliari Province
      • Villaputzu
Ciriotti M.E. & Blass.G. (2010): Pot-pourri 2009: identificazioni UKiS AMI. Minerali italiani di interesse. Micro (UK report), 2/2010, 124-127
  • Kyushu Region
    • Nagasaki Prefecture
      • Tsushima Islands
Shimada (1982) Sanko-Gakkai Koen-Yoshi, 15.
  • Guerrero
    • Mun. de Taxco
      • Taxco de Alarcón (Taxco; Tasco)
Yta, M., Mundo, N. F., Gutiérrez, C. D., Tovar, R. M., Almazán, A. D., & Mendoza, O. T. (2005). Mineralogy and geochemistry of sulfide-bearing tailings from silver mines in the Taxco, Mexico area to evaluate their potential environmental impact. Geofísica internacional, 44(1), 49-64.
  • Rogaland
    • Sauda
Personal commentary Inge Bryhni, Oslo 1993. ID by XRD and semiquantitative spectrometric analysis.
  • Małopolskie
    • Olkusz District
      • Olkusz
Cabała, J., & Bzowska, G. (2008). Sulphate speleothems in Pomorzany Zn–Pb ore mine, southern Poland. Kras i speleologia, 12(21), 59-76.
  • Murcia
    • Cartagena
      • Sierra Minera de Cartagena-La Unión
        • Llano del Beal
          • Cabezo de Ponce
FMF Forum
  • Wallis (Valais)
    • Martigny
      • Mont Chemin
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 82
  • California
    • Inyo Co.
      • Inyo Mts (Inyo Range)
        • Malpais Mesa
Kampf, A. R., Mills, S. J., & Nash, B. P. (2016). PREPUBLICATION: Pauladamsite, Cu4 (SeO3)(SO4)(OH) 4· 2H2O, a new mineral from the Santa Rosa mine, Darwin district, California, USA. Mineralogical Magazine.
  • Utah
    • San Juan Co.
      • White Canyon District
        • Red Canyon
Kampf, A.R., Kasatkin, A.V., Čejka, J., Marty, J. (2015): Plášilite, Na(UO2)(SO4)(OH)•2H2O, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. Journal of Geosciences. 60, 1-10
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