Mineralienatlas - Fossilienatlas
Dalnegroite |
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Dalnegroit schwarze Stengel von Dalnegroit auf Auripigment, Shimen Mine, Shimen, Hunan, VR China; BB < 1 mm, analysiert Copyright: Joy Desor; Contribution: openpit Location: China/Hunan, Provinz/Changde, Präfektur/Shimen, Kreis/Jiepaiyu As-Lagerstätte/Jiepaiyu Mine (Shimen Mine; Realgar Mine) Mineral: Dalnegroite Image: 1586267413 License: Usage for Mineralienatlas project only |
Dalnegroit |
schwarze Stengel von Dalnegroit auf Auripigment, Shimen Mine, Shimen, Hunan, VR China; BB < 1 mm, analysiert |
Copyright: | Joy Desor |
Contribution: openpit 2020-04-07 |
Locality: Jiepaiyu Mine (Shimen Mine; Realgar Mine) / Jiepaiyu As-Lagerstätte / Shimen, Kreis / Changde, Präfektur / Hunan, Provinz / China |
Collectors Summary
Color | dunkelgrau |
Streak color | braunrot |
Lustre | Halbmetallglanz |
Hardness (Mohs) | 3 - 3.5 |
Cleavages | keine |
Fracture | uneben |
Crystal System | triklin, P1 |
Chemism
Chemical formula |
Tl4Pb2(As,Sb)20S34 |
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Additional chem. information |
As-dominantes Analog von Chabournéit |
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Chemical composition |
Antimon, Arsen, Blei, Thallium, Schwefel |
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Analysis wt% |
S : 25.99, As : 21.21, Sb : 23.63, Pb : 8.80, Tl : 20.76 (Ref: Mineralogical Magazine 2009) |
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Strunz 9th edition incl. updates |
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2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide) |
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Lapis Classification |
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II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide) |
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Classification by Hölzel |
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2: SULFIDES |
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IMA status |
anerkannt, Neue Mineralien - IMA Web-Seite, Okt. 2009 |
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Mineral status |
anerkanntes Mineral |
IMA Classification
IMA Classification |
Chabournéite group |
Optical Properties
dunkelgrau |
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braunrot |
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Dalnegroit ist im widerspiegelten Licht stark doppelt refletierend und schwach pleochroitisch, von weiß bis ein wenig ins grünlich-graue. Im kreuz-polarisiertem Licht ist es hoch anisotropisch mit bläulich zu grünen kreisförmigen Schattier |
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opak |
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Halbmetallglanz |
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weiß bis ein wenig ins grünlich-graue |
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stark |
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Reflectivity: (Lambda nm) ↓, ↑, Ø |
(471.1) 45.60, 46.10, 45.85 |
Reflectivity Ø |
46.33 |
Crystallography
1 |
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Space Group number |
1 |
P1 |
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Cell parameters a (Å) |
16.217 |
Cell parameters b (Å) |
42.544 |
Cell parameters c (Å) |
8.557 |
Cell parameters a/b or c/a |
0.381 |
Cell parameters c/b |
0.201 |
Cell parameters α |
95.72 |
Cell parameters β |
90.25 |
Cell parameters γ |
96.62 |
Z |
4 |
Volume (ų) |
5834.469 |
durch Analogie mit Chabournéit |
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3.927(100), 3.775(45), 3.685(45), 3.620(50), 3.124(50), 2.929(60), 2.850(70), 2.097(60) |
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Calculated from d-spacing and intensity at 0.1541838 nm (Cu) |
Crystal Structure 3D
Open larger view |
Physical Properties
3 - 3.5 |
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87 (25g) |
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4.82 (berechnet) |
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4.616 ( ρ calc. Mineralienatlas ) |
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keine |
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uneben |
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spröde |
(Co-)Type locality
(Co-)Type locality |
Schweiz/Wallis, Kanton/Goms, Bezirk/Binntal/Binn/Fäld (Imfeld, Im Feld)/Grube Lengenbach |
Type material |
Museum of Mineralogy, Department of Geosciences, Universität von Padova, Italien |
Collection number of type material |
MMP M7620 |
Preface
Name from |
Alberto Dal Negro, Professor der Mineralogie und Kristallographie an der Universität von Padova seit 1976. |
Author (Name, Year) |
Fabrizio Nestola, 2009 |
References
IMA group assignments
Other languages
German |
Dalnegroit |
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Spanish |
Dalnegroita |
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English |
Dalnegroite |
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Russian |
Дальнегроит |
CNMNC (IMA)-Number
IMA 2009-058 |
CNMNC symbol
Symbol |
Dnr |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | xUbA-Ps0FEm0Pct0M7W4sA |
GUID (Global unique identifier) | F8C046C5-34FB-4914-B43D-CB7433B5B8B0 |
Database ID | 5286 |