Danalite-Helvine Series
A solid-solution series between two end-member minerals
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About Danalite-Helvine Series
Crystal System:
Isometric
Series Formula:
Be3Fe42+(SiO4)3S to Be3Mn42+(SiO4)3S
Unique Identifiers
Mindat ID:
8959
Long-form identifier:
mindat:1:1:8959:9
Optical Data of Danalite-Helvine Series
Type:
Isotropic
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| SiO2 | 32.08 % |
| Al2O3 | 0.23 % |
| MnO | 27.02 % |
| FeO | 16.14 % |
| ZnO | 7.40 % |
| CaO | 0.15 % |
| MgO | 0.26 % |
| BeO | 13.26 % |
| S | 5.86 % |
| O=S | -2.92 % |
| Total: | 99.48 % |
wt%
| 2 | |
|---|---|
| Mg | 0.1 % |
| Mn | 5.8 % |
| Fe | 10.7 % |
| Zn | 2.6 % |
| Si | 14.6 % |
| S | 4.7 % |
| Total: | 38.5 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 2 | (Fe2.2Mn1.2Zn0.5)Be4Si3.1O4S1 |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Hørtekollen, Sylling, Lier, Buskerud, Norway | A single, brown transparent crystal 20 mm across | |
| 2 | Rosebery Mine, Rosebery, Rosebery district, West Coast municipality, Tasmania, Australia | Danalite, SEM/EDS, average of 8 analyses |
Crystallography of Danalite-Helvine Series
Crystal System:
Isometric
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010952 | Helvine | Kudoh Y, Takeuchi Y (1985) The effect of pressure on helvite Mn8S2[Be6Si6O24] Zeitschrift fur Kristallographie 173 305-312 | ![]() | 1985 | Schwarzenberg, Saxony | 1.4 | 293 |
| 0010953 | Helvine | Kudoh Y, Takeuchi Y (1985) The effect of pressure on helvite Mn8S2[Be6Si6O24] Zeitschrift fur Kristallographie 173 305-312 | ![]() | 1985 | Schwarzenberg, Saxony | 2.7 | 293 |
| 0010954 | Helvine | Kudoh Y, Takeuchi Y (1985) The effect of pressure on helvite Mn8S2[Be6Si6O24] Zeitschrift fur Kristallographie 173 305-312 | ![]() | 1985 | Schwarzenberg, Saxony | 3.6 | 293 |
| 0010955 | Helvine | Kudoh Y, Takeuchi Y (1985) The effect of pressure on helvite Mn8S2[Be6Si6O24] Zeitschrift fur Kristallographie 173 305-312 | ![]() | 1985 | Schwarzenberg, Saxony | 4 | 293 |
| 0010956 | Helvine | Kudoh Y, Takeuchi Y (1985) The effect of pressure on helvite Mn8S2[Be6Si6O24] Zeitschrift fur Kristallographie 173 305-312 | ![]() | 1985 | Schwarzenberg, Saxony | 4.5 | 293 |
| 0005916 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005915 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005914 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005913 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005912 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005911 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005910 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005909 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005908 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005907 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005906 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005905 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005904 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005903 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005902 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005901 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005900 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005899 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005898 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005897 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005896 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0005895 | Danalite | Antao S M, Hassan I, Parise J B (2003) The structure of danalite at high temperature obtained from synchrotron radiation and Rietveld refinements The Canadian Mineralogist 41 1413-1422 | ![]() | 2003 | 0 | 293 | |
| 0000974 | Helvine | Hassan I, Grundy H D (1985) The crystal structures of helvite group minerals, (MnFeZn)8(Be6Si6O24)S2 American Mineralogist 70 186-192 | ![]() | 1985 | 0 | 293 | |
| 0000973 | Helvine | Hassan I, Grundy H D (1985) The crystal structures of helvite group minerals, (MnFeZn)8(Be6Si6O24)S2 American Mineralogist 70 186-192 | ![]() | 1985 | 0 | 293 | |
| 0000972 | Danalite | Hassan I, Grundy H D (1985) The crystal structures of helvite group minerals, (MnFeZn)8(Be6Si6O24)S2 American Mineralogist 70 186-192 | ![]() | 1985 | 0 | 293 | |
| 0000971 | Danalite | Hassan I, Grundy H D (1985) The crystal structures of helvite group minerals, (MnFeZn)8(Be6Si6O24)S2 American Mineralogist 70 186-192 | ![]() | 1985 | 0 | 293 |
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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.
Internet Links for Danalite-Helvine Series
mindat.org URL:
https://www.mindat.org/min-8959.html
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References for Danalite-Helvine Series
Reference List:
Localities for Danalite-Helvine Series
Showing 395 localities.
Locality List
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- This locality has estimated coordinates.
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? - 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.







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The
Navegadora claim, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil