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Drobecite

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About DrobeciteHide

09233770014946379816406.jpg
Erich Drobec
Formula:
CdSO4 · 4H2O
Colour:
Colourless to light blue
Lustre:
Vitreous
Crystal System:
Monoclinic
Member of:
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.
The higher hydrate counterpart of voudourisite and lazaridisite. Compare also Unnamed (Cd sulfate).


Classification of DrobeciteHide

Approved
Approval Year:
2002
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

Physical Properties of DrobeciteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless to light blue

Optical Data of DrobeciteHide

Type:
Uniaxial (-)
RI values:
nα = 1.430 nβ = 1.454 nγ = 1.470
2V:
Measured: 70° , Calculated: 77°
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of DrobeciteHide

Formula:
CdSO4 · 4H2O
IMA Formula:
Cd(SO4) · 4H2O

Crystallography of DrobeciteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 6.5859 Å, b = 14.329 Å, c = 8.5712 Å
β = 91.51°
Ratio:
a:b:c = 0.46 : 1 : 0.598
Unit Cell V:
808.58 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.98Å(85)
4.84Å(70)
3.146Å(85)
2.967Å(85)
2.708Å(75)
2.654Å(100)
Comments:
From Type Description.

Type Occurrence of DrobeciteHide

Synonyms of DrobeciteHide

Other Language Names for DrobeciteHide

German:Drobecit

Relationship of Drobecite to other SpeciesHide

Member of:
Other Members of this group:
Aplowite(Co,Mn,Ni)SO4 · 4H2OMon. 2/m
Boyleite(Zn,Mg)SO4 · 4H2OMon. 2/m : P21/b
Ilesite(Mn,Zn,Fe)SO4 · 4H2OMon. 2/m
RozeniteFeSO4 · 4H2OMon. 2/m : P21/b
StarkeyiteMgSO4 · 4H2OMon. 2/m : P21/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Drobecite associated with NiedermayriteCdCu4(SO4)2(OH)6 · 4H2O
1 photo of Drobecite associated with CalciteCaCO3
1 photo of Drobecite associated with ChalcanthiteCuSO4 · 5H2O

Related Minerals - Nickel-Strunz GroupingHide

7.CB.05Dwornikite(Ni,Fe)SO4 · H2OMon. 2/m : B2/b
7.CB.05GunningiteZnSO4 · H2OMon. 2/m : B2/b
7.CB.05KieseriteMgSO4 · H2OMon. 2/m
7.CB.05Poitevinite(Cu,Fe)SO4 · H2OTric.
7.CB.05SzmikiteMnSO4 · H2OMon.
7.CB.05SzomolnokiteFeSO4 · H2OMon. 2/m : B2/b
7.CB.05CobaltkieseriteCoSO4 · H2OMon. 2/m : B2/b
7.CB.07SanderiteMgSO4 · 2H2OOrth. 2 2 2 : P21 21 21
7.CB.10BonattiteCuSO4 · 3H2OMon.
7.CB.15Aplowite(Co,Mn,Ni)SO4 · 4H2OMon. 2/m
7.CB.15Boyleite(Zn,Mg)SO4 · 4H2OMon. 2/m : P21/b
7.CB.15Ilesite(Mn,Zn,Fe)SO4 · 4H2OMon. 2/m
7.CB.15RozeniteFeSO4 · 4H2OMon. 2/m : P21/b
7.CB.15StarkeyiteMgSO4 · 4H2OMon. 2/m : P21/b
7.CB.15CranswickiteMgSO4 · 4H2OMon. m : Bb
7.CB.20ChalcanthiteCuSO4 · 5H2OTric. 1 : P1
7.CB.20JôkokuiteMnSO4 · 5H2OTric.
7.CB.20PentahydriteMgSO4 · 5H2OTric.
7.CB.20SiderotilFeSO4 · 5H2OTric.
7.CB.25Bianchite(Zn,Fe)SO4 · 6H2OMon. 2/m : P2/m
7.CB.25Chvaleticeite(Mn,Mg)SO4 · 6H2OMon. 2/m : B2/b
7.CB.25FerrohexahydriteFeSO4 · 6H2OMon. 2/m : B2/b
7.CB.25HexahydriteMgSO4 · 6H2OMon. 2/m : P2/m
7.CB.25Moorhouseite(Co,Ni,Mn)SO4 · 6H2OMon.
7.CB.25Nickelhexahydrite(Ni,Mg,Fe)SO4 · 6H2OMon.
7.CB.30RetgersiteNiSO4 · 6H2OTet. 4 2 2 : P41 21 2
7.CB.35BieberiteCoSO4 · 7H2OMon. 2/m : P2/m
7.CB.35BoothiteCuSO4 · 7H2OMon.
7.CB.35MallarditeMnSO4 · 7H2OMon. 2/m : P2/m
7.CB.35MelanteriteFe2+(H2O)6SO4 · H2OMon. 2/m : P21/b
7.CB.35Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2OMon.
7.CB.35Alpersite(Mg,Cu)(SO4) · 7H2OMon. 2/m : P21/b
7.CB.40EpsomiteMgSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.40GoslariteZnSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.40MorenositeNiSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.45AlunogenAl2(SO4)3 · 17H2OTric. 1
7.CB.45Meta-alunogenAl2(SO4)3 · 12H2O
7.CB.50AluminocoquimbiteAl2Fe2(SO4)6(H2O)12·6H2OTrig. 3m (3 2/m) : P3 1c
7.CB.55CoquimbiteAlFe3(SO4)6(H2O)12·6H2OTrig. 3m (3 2/m) : P3 1c
7.CB.55ParacoquimbiteFe4(SO4)6(H2O)12· 6H2OTrig. 3 : R3
7.CB.55Rhomboclase(H5O2)Fe3+(SO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.CB.60KorneliteFe2(SO4)3 · 7H2OMon. 2/m : P21/m
7.CB.65QuenstedtiteFe2(SO4)3 · 11H2OTric. 1 : P1
7.CB.70LauseniteFe2(SO4)3·5H2OMon. 2/m : P21/m
7.CB.75LishizheniteZnFe2(SO4)4 · 14H2OTric. 1 : P1
7.CB.75RömeriteFe2+Fe3+2(SO4)4 · 14H2OTric. 1 : P1
7.CB.80RansomiteCuFe2(SO4)4 · 6H2OMon. 2/m : P21/b
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2OMon.
7.CB.85BíliniteFe2+Fe3+2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85Dietrichite(Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85HalotrichiteFeAl2(SO4)4 · 22H2OMon. 2 : P2
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85Redingtonite(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2OMon.
7.CB.85Wupatkiite(Co,Mg,Ni)Al2(SO4)4·22H2OMon.
7.CB.90MeridianiiteMgSO4 · 11H2OTric. 1 : P1

Other InformationHide

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 DrobeciteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Giester, G. and 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 DrobeciteHide

Localities for DrobeciteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Greece (TL)
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Km 3
            • Kaminiza mines
Giester, G. and 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).
 
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