2.BE.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
E : With Pb (Bi)

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Slm	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SchlemaiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Black

Streak:

Black

Hardness:

3 on Mohs scale

Hardness:

VHN₂₅=106 kg/mm² - Vickers

Hardness Data:

Measured

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Irregular/Uneven

Density:

7.54 g/cm³ (Calculated)

Optical Data of SchlemaiteHide

Anisotropism:

Very weak, with rotation tints in shades of very pale metallic orange and blue

Bireflectance:

Very weak

Reflectivity:

Wavelength	R₁	R₂	^imR₁	^imR₂
400nm	35.3%	36.2%	20.6%	21.7%
420nm	36.1%	37.1%	20.9%	22.3%
440nm	36.3%	37.65%	21.1%	22.7%
460nm	36.3%	38.0%	21.1%	23.0%
470nm	36.6%	38.1%	21.1%	23.0%
480nm	36.6%	38.1%	21.05%	23.1%
500nm	36.5%	38.1%	20.8%	22.9%
520nm	36.4%	38.1%	20.7%	22.8%
540nm	36.5%	38.1%	20.7%	22.8%
546nm	36.45%	38.1%	20.7%	22.8%
560nm	36.4%	38.2%	20.7%	22.8%
580nm	36.55%	38.2%	20.9%	22.9%
589nm	36.6%	38.3%	20.95%	22.9%
600nm	36.7%	38.35%	21.0%	23.1%
620nm	36.7%	38.4%	21.1%	23.1%
640nm	36.7%	38.5%	21.0%	23.2%
650nm	36.6%	38.5%	21.0%	23.2%
660nm	36.6%	38.4%	21.1%	23.2%
680nm	36.7%	38.4%	21.1%	23.2%
700nm	36.4%	38.5%	21.0%	23.4%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 38.5%.
R₁ shown in black, R₂ shown in red, ^imR₁ shown in green, ^imR₂ shown in blue

Colour in reflected light:

Grey

Internal Reflections:

None

Pleochroism:

Non-pleochroic

Chemistry of SchlemaiteHide

Mindat Formula:

(Cu,◻)₆(Pb,Bi)Se₄

Elements listed:

Bi, Cu, Pb, Se - search for minerals with similar chemistry

Crystallography of SchlemaiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/m

Cell Parameters:

a = 9.5341 Å, b = 4.1004 Å, c = 10.2546 Å
β = 100.066°

Ratio:

a:b:c = 2.325 : 1 : 2.501

Unit Cell V:

394.72 Å³

Twinning:

None observed.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.34 Å	(80)
3.17 Å	(60)
2.85 Å	(80)
2.69 Å	(80)
2.17 Å	(60)
2.10 Å	(70)
2.07 Å	(100)
2.04 Å	(50)

Comments:

From type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of SchlemaiteHide

Type Locality:

ⓘ Shaft 371, Hartenstein, Zwickau District, Saxony, Germany

General Appearance of Type Material:

Anhedral to subhedral grains, up to a few 100 µm in size.

Place of Conservation of Type Material:

The Natural History Museum, London, England (BM 2003,4).
Mineralogical Institute, Technische Universität Bergakademie, Freiberg, Germany (80824).

Geological Setting of Type Material:

In hydrothermal Se-bearing dolomite-ankerite veins.

Associated Minerals at Type Locality:

Umangite	Tiemannite	Löllingite	Eucairite	Dolomite
Clausthalite	Bohdanowiczite	Berzelianite

Synonyms of SchlemaiteHide

IMA2003-026

Other Language Names for SchlemaiteHide

Russian:Шлемаит

Simplified Chinese:硒铋铅铜矿

Traditional Chinese:硒鉍鉛銅礦

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Schlemaite associated with Berzelianite	Cu_2-xSe (x ≈ 0.12)
1 photo of Schlemaite associated with Eucairite	AgCuSe
1 photo of Schlemaite associated with Clausthalite	PbSe
1 photo of Schlemaite associated with Ankerite-Dolomite Series

Related Minerals - Strunz-mindat Grouping Hide

2.BE.	Zipserite	Bi₅S₄	Trig. 3m (3 2/m) : R3m
2.BE.05	Betekhtinite	Pb₂(Cu,Fe)_22-24S₁₅	Orth. mmm (2/m 2/m 2/m) : Immm
2.BE.10	Furutobeite	(Cu,Ag)₆PbS₄	Mon.
2.BE.15	Rhodplumsite	Rh₃Pb₂S₂	Trig. 3m (3 2/m) : R3m
2.BE.15	Shandite	Ni₃Pb₂S₂	Trig. 3m (3 2/m) : R3m
2.BE.20	Parkerite	Ni₃(Bi,Pb)₂S₂	Mon.
2.BE.30	Pašavaite	Pd₃Pb₂Te₂	Orth. mmm (2/m 2/m 2/m) : Pmmn

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.

Internet Links for SchlemaiteHide

mindat.org URL:

https://www.mindat.org/min-25688.html
Please feel free to link to this page.

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for SchlemaiteHide

Reference List:

Forster, H.-J., Cooper, M. A., Roberts, A. C., Stanley, C. J., Criddle, A. J., Hawthorne, F. C., Laflamme, J.H. G., Tischendorf, G. (2003) Schlemaite, (Cu,◻)₆(Pb,Bi)Se₄, a new mineral species from Neiderschlema-Alberoda, Erzgebirge, Germany: description and crystal structure. The Canadian Mineralogist, 41 (6) 1433-1444 doi:10.2113/gscanmin.41.6.1433

(2023) Schlemaite. Handbook of Mineralogy. Mineralogical Society of America

Localities for SchlemaiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Germany
Saxony Erzgebirgskreis Aue-Bad Schlema ⓘ Alberoda	Forster et al. (2004)
Zwickau District Hartenstein ⓘ Shaft 371 (TL)	Forster et al. (2003)

Schlemaite

About SchlemaiteHide

Unique IdentifiersHide

IMA Classification of SchlemaiteHide

Classification of SchlemaiteHide