Reedmergnerite
A valid IMA mineral species - grandfathered
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About Reedmergnerite
Formula:
NaBSi3O8
Colour:
Colourless to yellow-orange, salmon-orange
Lustre:
Vitreous
Hardness:
6 - 6½
Specific Gravity:
2.70 - 2.78
Crystal System:
Triclinic
Member of:
Name:
Named in honor of Frank S. Reed (b. 1894) and John L. Mergner (1894), thin section and polished section technicians at the United States Geological Survey (USGS).
Type Locality:
Unique Identifiers
Mindat ID:
3382
Long-form identifier:
mindat:1:1:3382:0
GUID
(UUID V4):
(UUID V4):
fb125733-e240-494f-815a-3598141b29c6
IMA Classification of Reedmergnerite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1955
Classification of Reedmergnerite
9.FA.35
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.4.1
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
17.5.2
17 : Silicates Containing other Anions
5 : Borosilicates
17 : Silicates Containing other Anions
5 : Borosilicates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Rm | 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 Reedmergnerite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Colourless to yellow-orange, salmon-orange
Hardness:
6 - 6½ on Mohs scale
Cleavage:
Perfect
{001}
{001}
Density:
2.70 - 2.78 g/cm3 (Measured) 2.779 g/cm3 (Calculated)
Optical Data of Reedmergnerite
Type:
Biaxial (-)
RI values:
nα = 1.554 nβ = 1.565 nγ = 1.573
2V:
Measured: 80° , Calculated: 80°
Max Birefringence:
δ = 0.019
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:
Low
Dispersion:
none
Chemistry of Reedmergnerite
Mindat Formula:
NaBSi3O8
Elements listed:
Common Impurities:
Ti,Al,Fe,Mg,Ca,Ba,K,F,H2O,P
Crystallography of Reedmergnerite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.83 Å, b = 12.36 Å, c = 6.8 Å
α = 93.31°, β = 116.35°, γ = 92.06°
α = 93.31°, β = 116.35°, γ = 92.06°
Ratio:
a:b:c = 0.633 : 1 : 0.55
Unit Cell V:
587.34 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space Group: C1
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) |
---|---|---|---|---|---|---|---|
0000139 | Reedmergnerite | Appleman D E, Clark J R (1965) Crystal structure of reedmergnerite, a boron albite, and its relation to feldspar crystal chemistry American Mineralogist 50 1827-1850 | 1965 | 0 | 293 | ||
0001439 | Reedmergnerite | Fleet M E (1992) Tetrahedral-site occupancies in reedmergnerite and synthetic boron albite (NaBSi3O8) sample from Utah American Mineralogist 77 76-84 | 1992 | 0 | 293 | ||
0001440 | Reedmergnerite | Fleet M E (1992) Tetrahedral-site occupancies in reedmergnerite and synthetic boron albite (NaBSi3O8) sample low boron albite Gb100 American Mineralogist 77 76-84 | 1992 | 0 | 293 | ||
0001441 | Reedmergnerite | Fleet M E (1992) Tetrahedral-site occupancies in reedmergnerite and synthetic boron albite (NaBSi3O8) sample high boron albite Gb87, known as reedmergnerite-high American Mineralogist 77 76-84 | 1992 | 0 | 293 | ||
0002214 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 0 | 293 | ||
0002215 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 0 | 293 | ||
0002216 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 0.88 | 293 | ||
0002217 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 1.89 | 293 | ||
0002218 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 3 | 293 | ||
0002219 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 3.64 | 293 | ||
0002220 | Reedmergnerite | Downs R T, Yang H, Hazen R M, Finger L W, Prewitt C T (1999) Compressibility mechanisms of alkali feldspars: New data from reedmergnerite Sample from Joseph Smith #1 mine, Duchesne Co., Utah, NMNH 140 American Mineralogist 84 333-340 | 1999 | 4.68 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
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Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.037 Å | (100) |
3.561 Å | (90) |
3.076 Å | (90) |
3.225 Å | (85) |
3.876 Å | (65) |
2.841 Å | (55) |
6.076 Å | (50) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
24 : Authigenic minerals in terrestrial sediments (see also #17) | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
50 : Coal and/or oil shale minerals | <0.36 |
Type Occurrence of Reedmergnerite
General Appearance of Type Material:
As stubby prismatic to platy crystals, commonly wedge-shaped
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 106865.
Geological Setting of Type Material:
Dolomitic shale
Associated Minerals at Type Locality:
Reference:
Milton, C., Axelrod, J.M., Grimaldi, F.S. (1955) New minerals, reedmergnerite (Na2O·B2O3·6SiO2) and eitelite (Na2O·MgO·2CO2) associated with leucosphenite, shortite, searlesite, and crocidolite in the Green River formation, Utah. American Mineralogist: 40: 326-327.
Other Language Names for Reedmergnerite
Relationship of Reedmergnerite to other Species
Member of:
Other Members of this group:
Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. | |
Banalsite | Na2BaAl4Si4O16 | Orth. mm2 : Iba2 |
Buddingtonite | (NH4)(AlSi3O8) | Mon. 2 : P21 |
Celsian | Ba(Al2Si2O8) | Mon. 2/m |
Cleavelandite | Na(AlSi3O8) | Tric. |
Filatovite | K(Al,Zn)2(As,Si)2O8 | Mon. 2/m |
Hexacelsian | BaAl2Si2O8 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
Kokchetavite | K(AlSi3O8) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Kumdykolite | Na(AlSi3O8) | Orth. mmm (2/m 2/m 2/m) : Pnnm |
Paracelsian | Ba(Al2Si2O8) | Mon. 2/m : P21/b |
Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 | |
Slawsonite | Sr(Al2Si2O8) | Mon. 2/m : P21/b |
Stronalsite | Na2SrAl4Si4O16 | Orth. |
Svyatoslavite | Ca(Al2Si2O8) | Mon. 2 : P21 |
Unnamed (New Ordered Member of the Alkali Feldspar Series) | KNa(Si6Al2)O16 | Mon. m |
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Reedmergnerite associated with Telyushenkoite | (Cs,Na,K)Na6[Be2Al3Si15O39]F2 |
6 photos of Reedmergnerite associated with Quartz | SiO2 |
4 photos of Reedmergnerite associated with Shibkovite | K(◻K)Ca2Zn3[Si12O30] |
3 photos of Reedmergnerite associated with Hyalotekite | (Ba,Pb,K)4(Ca,Y)2(B,Be)2(Si,B)2Si8O28(F,Cl) |
2 photos of Reedmergnerite associated with Epididymite | Na2Be2Si6O15 · H2O |
2 photos of Reedmergnerite associated with Aegirine | NaFe3+Si2O6 |
2 photos of Reedmergnerite associated with Pekovite | SrB2Si2O8 |
2 photos of Reedmergnerite associated with Pectolite | NaCa2Si3O8(OH) |
1 photo of Reedmergnerite associated with Yusupovite | Na2Zr(Si6O15) · 2.5H2O |
1 photo of Reedmergnerite associated with Kentbrooksite | (Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2 · 2H2O |
Related Minerals - Strunz-mindat Grouping
9.FA. | Hexacelsian | BaAl2Si2O8 |
9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
9.FA.05 | Kaliophilite | KAlSiO4 |
9.FA.05 | Kalsilite | KAlSiO4 |
9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
9.FA.05 | Panunzite | (K,Na)AlSiO4 |
9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
9.FA.05 | Carnegieite | NaAlSiO4 |
9.FA.05 va | Germanate-nepheline | (Na,K)AlGeO4 |
9.FA.05 | Megakalsilite | KAlSiO4 |
9.FA.05 | Trinepheline | NaAlSiO4 |
9.FA.05 | Davidsmithite | (Ca,◻)2Na6Al8Si8O32 |
9.FA.10 | Malinkoite | NaBSiO4 |
9.FA.15 | Virgilite | LiAlSi2O6 |
9.FA.25 | Lisitsynite | KBSi2O6 |
9.FA.30 | Buddingtonite | (NH4)(AlSi3O8) |
9.FA.30 | Celsian | Ba(Al2Si2O8) |
9.FA.30 | Microcline | K(AlSi3O8) |
9.FA.30 | Orthoclase | K(AlSi3O8) |
9.FA.30 | Sanidine | K(AlSi3O8) |
9.FA.30 | Rubicline | Rb(AlSi3O8) |
9.FA.30 va | Germanate-celsian | BaAl2Ge2O8 |
9.FA.30 | Monalbite | NaAlSi3O8 |
9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
9.FA.35 | Albite | Na(AlSi3O8) |
9.FA.35 | Anorthite | Ca(Al2Si2O8) |
9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
9.FA.45 | Svyatoslavite | Ca(Al2Si2O8) |
9.FA.45 | Kumdykolite | Na(AlSi3O8) |
9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
9.FA.55 | Lisetite | CaNa2Al4Si4O16 |
9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
9.FA.65 | Danburite | CaB2Si2O8 |
9.FA.65 | Maleevite | BaB2Si2O8 |
9.FA.65 | Pekovite | SrB2Si2O8 |
9.FA.70 | Stöfflerite | CaAl2Si2O8 |
9.FA.70 | Lingunite | (Na,Ca)AlSi3O8 |
9.FA.70 | Liebermannite | KAlSi3O8 |
9.FA.75 | Kokchetavite | K(AlSi3O8) |
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 Reedmergnerite
mindat.org URL:
https://www.mindat.org/min-3382.html
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References for Reedmergnerite
Reference List:
Milton, C., Chao, E. C. T., Axelrod, J. M., Grimaldi, F. S. (1960) Reedmergnerite, NaBSi3O8, the boron analogue of albite, from the Green River Formation, Utah. American Mineralogist, 45 (1-2) 188-199
Fleet, Michael E. (1992) Tetrahedral-site occupancies in reedmergnerite and synthetic boron albite (NaBSi3O8) American Mineralogist, 77 (1-2) 76-84
Grew, Edward S., Belakovskiy, Dimitriy I., Fleet, Michael E., Yates, Martin G., Mcgee, James J., Marquez, Nicholas (1993) Reedmergnerite and associated minerals from peralkaline pegmatite, Dara-i-Pioz, southern Tien Shan, Tajikistan. European Journal of Mineralogy, 5 (5) 971-984 doi:10.1127/ejm/5/5/0971
Localities for Reedmergnerite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
China | |
| ZHANG et al. (2018) +2 other references |
Pakistan | |
| Weerth et al. (2016) |
Russia | |
| [World of Stones 95:5-6 |
Pakhomovsky et al. (2014) | |
Tajikistan | |
| Grew et al. (1994) +5 other references |
USA | |
Tank (1972) +1 other reference | |
| |
| Milton et al. (1960) +1 other reference |
Bullock (1981) | |
| Milton et al. (1960) |
Pabst et al. (1972) | |
| Milton (1977) |
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Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan