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Drobecite

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Esperanza Mine, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece
© SF

Show Drobecite Photos (2)



Formula:
CdSO
 
4
 · 4H
 
2
O
System:MonoclinicColour:Colourless to light blue
Name:
Named after the mineral collector Obermedizinalrat Dr. med. Dr. phil. Erich Drobec who was born on 25 February 1919 in Vienna and died on 2 November 2004. He received his doctor's degree in medicine in 1942 and in ethnology in 1950. In the late 1950s he was a pioneer in ethnic medicine and published several ground-breaking papers. He was a serious mineral collector specialising in systematic mineralogy. His collection is now on public display.


Compare Unnamed (Cd Sulphate Monohydrate).

Classification of Drobecite

IMA status:Approved 2002
Nickel-Strunz 10th (pending) edition ID:7.CB.15

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

Type Locality:Esperanza Mine, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece

Physical Properties of Drobecite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless to light blue

Crystallography of Drobecite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m {P1 1 21/m} {P21/m} {P1 21/m 1}
Cell Parameters:a = 6.5859Å, b = 14.329Å, c = 8.5712Å
β = 91.51°
Ratio:a:b:c = 0.46 : 1 : 0.598
Unit Cell Volume:V 808.58 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
5.98(85)
4.84(70)
3.146(85)
2.967(85)
2.708(75)
2.654(100)
Comments:From Type Description.

Optical Data of Drobecite

Type:Uniaxial (-)
RI values: nα = 1.430 nβ = 1.454 nγ = 1.470
2V:Measured: 70° , Calculated: 77°
Maximum Birefringence:δ = 0.040

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Drobecite

Formula:
CdSO
 
4
 · 4H
 
2
O
Essential elements:Cd, H, O, S
All elements listed in formula:Cd, H, O, S

Relationship of Drobecite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.CB.05Dwornikite
(Ni,Fe)SO
 
4
 · H
 
2
O
7.CB.05Gunningite
ZnSO
 
4
 · H
 
2
O
7.CB.05Kieserite
MgSO
 
4
 · H
 
2
O
7.CB.05Poitevinite
(Cu,Fe,Zn)SO
 
4
 · H
 
2
O
7.CB.05Szmikite
MnSO
 
4
 · H
 
2
O
7.CB.05Szomolnokite
FeSO
 
4
 · H
 
2
O
7.CB.05Cobaltkieserite
CoSO
 
4
 · H
 
2
O
7.CB.07Sanderite
MgSO
 
4
 · 2H
 
2
O
7.CB.10Bonattite
CuSO
 
4
 · 3H
 
2
O
7.CB.15Aplowite
(Co,Mn,Ni)SO
 
4
 · 4H
 
2
O
7.CB.15Boyleite
(Zn,Mg)SO
 
4
 · 4H
 
2
O
7.CB.15Ilesite
(Mn,Zn,Fe)SO
 
4
 · 4H
 
2
O
7.CB.15Rozenite
FeSO
 
4
 · 4H
 
2
O
7.CB.15Starkeyite
MgSO
 
4
 · 4H
 
2
O
7.CB.15Cranswickite
MgSO
 
4
 · 4H
 
2
O
7.CB.20Chalcanthite
CuSO
 
4
 · 5H
 
2
O
7.CB.20Jôkokuite
MnSO
 
4
 · 5H
 
2
O
7.CB.20Pentahydrite
MgSO
 
4
 · 5H
 
2
O
7.CB.20Siderotil
FeSO
 
4
 · 5H
 
2
O
7.CB.25Bianchite
(Zn,Fe)SO
 
4
 · 6H
 
2
O
7.CB.25Chvaleticeite
(Mn,Mg)SO
 
4
 · 6H
 
2
O
7.CB.25Ferrohexahydrite
FeSO
 
4
 · 6H
 
2
O
7.CB.25Hexahydrite
MgSO
 
4
 · 6H
 
2
O
7.CB.25Moorhouseite
(Co,Ni,Mn)SO
 
4
 · 6H
 
2
O
7.CB.25Nickelhexahydrite
(Ni,Mg,Fe)SO
 
4
 · 6H
 
2
O
7.CB.30Retgersite
NiSO
 
4
 · 6H
 
2
O
7.CB.35Bieberite
CoSO
 
4
 · 7H
 
2
O
7.CB.35Boothite
CuSO
 
4
 · 7H
 
2
O
7.CB.35Mallardite
MnSO
 
4
 · 7H
 
2
O
7.CB.35Melanterite
FeSO
 
4
 · 7H
 
2
O
7.CB.35Zincmelanterite
(Zn,Cu,Fe)SO
 
4
 · 7H
 
2
O
7.CB.35Alpersite
(Mg,Cu)[SO
 
4
] · 7H
 
2
O
7.CB.40Epsomite
MgSO
 
4
 · 7H
 
2
O
7.CB.40Goslarite
ZnSO
 
4
 · 7H
 
2
O
7.CB.40Morenosite
NiSO
 
4
 · 7H
 
2
O
7.CB.45Alunogen
Al
 
2
(SO
 
4
)
 
3
 · 17H
 
2
O
7.CB.45Meta-alunogen
Al
 
2
(SO
 
4
)
 
3
 · 12H
 
2
O
7.CB.50Aluminocoquimbite
FeAl(SO
 
4
)
 
3
 · 9H
 
2
O
7.CB.55Coquimbite
Fe
 
2-x
Al
 
x
(SO
 
4
)
 
3
 · 9H
 
2
O, x ~0.5
7.CB.55Paracoquimbite
Fe
 
2
(SO
 
4
)
 
3
 · 9H
 
2
O
7.CB.55Rhomboclase
(H
 
5
O
 
2
)Fe
3+
 
(SO
 
4
)
 
2
 · 2H
 
2
O
7.CB.60Kornelite
Fe
 
2
(SO
 
4
)
 
3
 · 7H
 
2
O
7.CB.65Quenstedtite
Fe
 
2
(SO
 
4
)
 
3
 · 10H
 
2
O
7.CB.70Lausenite
Fe
 
2
(SO
 
4
)
 
3
·6H
 
2
O
7.CB.75Lishizhenite
ZnFe
 
2
(SO
 
4
)
 
4
 · 14H
 
2
O
7.CB.75Römerite
Fe
2+
 
Fe
3+
2
(SO
 
4
)
 
4
 · 14H
 
2
O
7.CB.80Ransomite
CuFe
 
2
(SO
 
4
)
 
4
 · 6H
 
2
O
7.CB.85Apjohnite
Mn
2+
 
Al
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
7.CB.85Bílinite
Fe
2+
 
Fe
3+
2
(SO
 
4
)
 
4
 · 22H
 
2
O
7.CB.85Dietrichite
(Zn,Fe
2+
 
,Mn
2+
 
)Al
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
7.CB.85Halotrichite
FeAl
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
7.CB.85Pickeringite
MgAl
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
7.CB.85Redingtonite
(Fe
2+
 
,Mg,Ni)(Cr,Al)
 
2
(SO
 
4
)
 
4
·22H
 
2
O
7.CB.85Wupatkiite
(Co,Mg,Ni)Al
 
2
(SO
 
4
)
 
4
·22H
 
2
O
7.CB.90Meridianiite
MgSO
 
4
 · 11H
 
2
O

Other Names for Drobecite

Synonyms:
IMA2002-034
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Drobecite

Reference List:

- +
Giester, G. & Rieck, B. (2010): Drobecite, a novel mineral from the Lavrion, Greece, deposit. 20th General Meeting of IMA (IMA2010) August 21 – 27, 2010, Budapest, Hungary (poster).

Internet Links for Drobecite

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    • Localities for Drobecite

    Hide Locality List
    (TL) indicates type locality. ? 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.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Lavrion (Laurion; Laurium)
    		Giester, G. & Rieck, B. (2010): Drobecite, a novel mineral from the Lavrion, Greece, deposit. 20th General Meeting of IMA (IMA2010) August 21 – 27, 2010, Budapest, Hungary (poster).
    Mineral and/or Locality
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