Drobecite
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About Drobecite
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.
Classification of Drobecite
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
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 Drobecite
Optical Data of Drobecite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Drobecite
Formula:
CdSO4 · 4H2O
IMA Formula:
Cd(SO4) · 4H2O
Elements listed:
Crystallography of Drobecite
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°
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.98 | (85) |
| 4.84 | (70) |
| 3.146 | (85) |
| 2.967 | (85) |
| 2.708 | (75) |
| 2.654 | (100) |
Comments:
From Type Description.
Type Occurrence of Drobecite
Synonyms of Drobecite
Relationship of Drobecite to other Species
Member of:
Other Members of this group:
| Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
| Boyleite | (Zn,Mg)SO4 · 4H2O | Mon. 2/m : P21/b |
| Ilesite | (Mn,Zn,Fe)SO4 · 4H2O | Mon. 2/m |
| Rozenite | FeSO4 · 4H2O | Mon. 2/m : P21/b |
| Starkeyite | MgSO4 · 4H2O | Mon. 2/m : P21/b |
Common Associates
Associated Minerals Based on Photo Data:
| Niedermayrite | 2 photos of Drobecite associated with Niedermayrite on mindat.org. |
| Calcite | 1 photo of Drobecite associated with Calcite on mindat.org. |
| Chalcanthite | 1 photo of Drobecite associated with Chalcanthite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
| 7.CB.05 | Dwornikite | (Ni,Fe)SO4 · H2O | Mon. 2/m : B2/b |
| 7.CB.05 | Gunningite | ZnSO4 · H2O | Mon. 2/m : B2/b |
| 7.CB.05 | Kieserite | MgSO4 · H2O | Mon. 2/m |
| 7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O | Tric. |
| 7.CB.05 | Szmikite | MnSO4 · H2O | Mon. |
| 7.CB.05 | Szomolnokite | FeSO4 · H2O | Mon. 2/m : B2/b |
| 7.CB.05 | Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : B2/b |
| 7.CB.07 | Sanderite | MgSO4 · 2H2O | Orth. 2 2 2 : P21 21 21 |
| 7.CB.10 | Bonattite | CuSO4 · 3H2O | Mon. |
| 7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
| 7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O | Mon. 2/m : P21/b |
| 7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O | Mon. 2/m |
| 7.CB.15 | Rozenite | FeSO4 · 4H2O | Mon. 2/m : P21/b |
| 7.CB.15 | Starkeyite | MgSO4 · 4H2O | Mon. 2/m : P21/b |
| 7.CB.15 | Cranswickite | MgSO4 · 4H2O | Mon. m : Bb |
| 7.CB.20 | Chalcanthite | CuSO4 · 5H2O | Tric. 1 : P1 |
| 7.CB.20 | Jôkokuite | MnSO4 · 5H2O | Tric. |
| 7.CB.20 | Pentahydrite | MgSO4 · 5H2O | Tric. |
| 7.CB.20 | Siderotil | FeSO4 · 5H2O | Tric. |
| 7.CB.25 | Bianchite | (Zn,Fe)SO4 · 6H2O | Mon. 2/m : P2/m |
| 7.CB.25 | Chvaleticeite | (Mn,Mg)SO4 · 6H2O | Mon. 2/m : B2/b |
| 7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O | Mon. 2/m : B2/b |
| 7.CB.25 | Hexahydrite | MgSO4 · 6H2O | Mon. 2/m : P2/m |
| 7.CB.25 | Moorhouseite | (Co,Ni,Mn)SO4 · 6H2O | Mon. |
| 7.CB.25 | Nickelhexahydrite | (Ni,Mg,Fe)SO4 · 6H2O | Mon. |
| 7.CB.30 | Retgersite | NiSO4 · 6H2O | Tet. 4 2 2 : P41 21 2 |
| 7.CB.35 | Bieberite | CoSO4 · 7H2O | Mon. 2/m : P2/m |
| 7.CB.35 | Boothite | CuSO4 · 7H2O | Mon. |
| 7.CB.35 | Mallardite | MnSO4 · 7H2O | Mon. 2/m : P2/m |
| 7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O | Mon. 2/m : P21/b |
| 7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O | Mon. |
| 7.CB.35 | Alpersite | (Mg,Cu)[SO4] · 7H2O | Mon. 2/m : P21/b |
| 7.CB.40 | Epsomite | MgSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
| 7.CB.40 | Goslarite | ZnSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
| 7.CB.40 | Morenosite | NiSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
| 7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 |
| 7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O | |
| 7.CB.50 | Aluminocoquimbite | FeAl(SO4)3 · 9H2O | Trig. 3m (3 2/m) : P3 1c |
| 7.CB.55 | Coquimbite | Fe2-xAlx(SO4)3 · 9H2O, x ~0.5 | Trig. 3m (3 2/m) : P3 1c |
| 7.CB.55 | Paracoquimbite | Fe2(SO4)3 · 9H2O | Trig. 3 : R3 |
| 7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O | Mon. 2/m : P21/m |
| 7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O | Tric. 1 : P1 |
| 7.CB.70 | Lausenite | Fe2(SO4)3·5H2O | Mon. 2/m : P21/m |
| 7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O | Tric. 1 : P1 |
| 7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O | Tric. 1 : P1 |
| 7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O | Mon. 2/m : P21/b |
| 7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O | Mon. |
| 7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
| 7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
| 7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O | Mon. 2 : P2 |
| 7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
| 7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O | Mon. |
| 7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4·22H2O | Mon. |
| 7.CB.90 | Meridianiite | MgSO4 · 11H2O | Tric. 1 : P1 |
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 Drobecite
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 Drobecite
mindat.org URL:
https://www.mindat.org/min-26376.html
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Localities for Drobecite
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The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Greece (TL) | |
| 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). |
Esperanza Mine, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece