Ramanite-(Rb)
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Dr. Chandrasekhara Venkata Raman
Formula:
Rb[B5O6(OH)4] · 2H2O
Crystal System:
Orthorhombic
Name:
Named in honor of Sir Chandrasekhara Venkata Raman (7 November 1888, Thiruvanaikoil, Tiruchirappalli, Madras Presidency, British India - 21 November 1970, Bangalore, Karnataka, India), physicist. He was awarded the 1930 Nobel Prize for Physics for discovering what is now called Raman scattering. Raman spectroscopy is based on this effect and is now an important tool for mineral identification, and was critical for the discovery of this mineral.
Santite group
Classification of Ramanite-(Rb)
Approved
Approval Year:
2007
6.EA.10
6.EA.10
6 : BORATES
E : Pentaborates
A : Neso-pentaborates
6 : BORATES
E : Pentaborates
A : Neso-pentaborates
26.5.2.2
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
Chemical Properties of Ramanite-(Rb)
Formula:
Rb[B5O6(OH)4] · 2H2O
IMA Formula:
RbB5O6(OH)4 · 2H2O
Elements listed:
Crystallography of Ramanite-(Rb)
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Aba2
Cell Parameters:
a = 11.304 Å, b = 10.963 Å, c = 9.337 Å
Ratio:
a:b:c = 1.031 : 1 : 0.852
Unit Cell V:
1,157.09 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.554 | (100) |
| 5.481 | (85) |
| 3.391 | (63) |
| 2.826 | (47) |
| 6.018 | (38) |
| 3.329 | (38) |
| 2.894 | (28) |
| 3.259 | (26) |
Type Occurrence of Ramanite-(Rb)
Synonyms of Ramanite-(Rb)
Related Minerals - Nickel-Strunz Grouping
| 6.EA.05 | Sborgite | Na[B5O6(OH)4] · 3H2O | Mon. |
| 6.EA.05 | Leucostaurite | Pb2[B5O9]Cl · 0.5H2O | Orth. mm2 : Pnn2 |
| 6.EA.10 | Santite | K[B5O6(OH)4] · 2H2O | Orth. |
| 6.EA.10 | Ramanite-(Cs) | Cs[B5O6(OH)4] · 2H2O | Mon. 2/m : B2/b |
| 6.EA.15 | Ammonioborite | (NH4)2[B5O6(OH)4]2 · H2O | Mon. 2/m : B2/b |
| 6.EA.25 | Ulexite | NaCa[B5O6(OH)6] · 5H2O | Tric. 1 : P1 |
Related Minerals - Dana Grouping (8th Ed.)
| 26.5.2.1 | Santite | K[B5O6(OH)4] · 2H2O | Orth. |
| 26.5.2.3 | Ramanite-(Cs) | Cs[B5O6(OH)4] · 2H2O | Mon. 2/m : B2/b |
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 Ramanite-(Rb)
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Thomas, R., P. Davidson, & A. Hahn (2008): Ramanite-(Ce) and ramanite-(Rb): New cesium and rubidium pentaborate tetrahydrate minerals identified with Raman spectroscopy: American Mineralogist 93, 1034-1042.
Internet Links for Ramanite-(Rb)
mindat.org URL:
https://www.mindat.org/min-31662.html
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External Links:
Mineral Dealers:
Localities for Ramanite-(Rb)
symbol to view information about a locality.
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.
Italy (TL) | |
| Thomas, R., Davidson, P., & Hahn, A. (2008). Ramanite-(Cs) and ramanite-(Rb): New cesium and rubidium pentaborate tetrahydrate minerals identified with Raman spectroscopy. American Mineralogist, 93(7), 1034-1042. |