Leakeite Root Name Group
A group of related mineral species
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About Leakeite Root Name Group
Bernard Elgey Leake
Formula:
ANa2(Z2+2Z3+2Li)(Si8O22)(OH,F,Cl)2
The Leakeite minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
Z(Al+Fe3++2Ti) > 1.5 apfu and
ZLi > 0.5 apfu
The root-name mineral, leakeite is defined with Na, Mg, Al and (OH) as the dominant elements. Minerals with other dominant elements are named with pre-fixes in accordance with the guidelines established in the 2012 amphibole nomenclature.
On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclature in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
A(Na+K+2Ca)> 0.5 apfu,
Z(Al+Fe3++2Ti) > 1.5 apfu and
ZLi > 0.5 apfu
The root-name mineral, leakeite is defined with Na, Mg, Al and (OH) as the dominant elements. Minerals with other dominant elements are named with pre-fixes in accordance with the guidelines established in the 2012 amphibole nomenclature.
On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclature in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
Name:
The series root name was named in 1992 by Frank Christopher Hawthorne, Roberta Oberti, Luciano Ungaretti, and Joel Dennison Grice in honor of Scottish geologist Bernard Elgey Leake [1932-], University of Glasgow and who was chairman of the IMA subcommitte to revise amphibole nomenclature. The chemical suffix designates the chemical relationship in the series.
This page provides mineralogical data about Leakeite Root Name Group.
Unique Identifiers
Mindat ID:
43507
Long-form identifier:
mindat:1:1:43507:1
GUID
(UUID V4):
(UUID V4):
325a7865-9985-4c94-a0a8-a0f8572ac0f8
Chemistry of Leakeite Root Name Group
Mindat Formula:
ANa2(Z2+2Z3+2Li)(Si8O22)(OH,F,Cl)2
The Leakeite minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
Z(Al+Fe3++2Ti) > 1.5 apfu and
ZLi > 0.5 apfu
The root-name mineral, leakeite is defined with Na, Mg, Al and (OH) as the dominant elements. Minerals with other dominant elements are named with pre-fixes in accordance with the guidelines established in the 2012 amphibole nomenclature.
On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclature in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
The Leakeite minerals are sodium amphiboles defined with:
A(Na+K+2Ca)> 0.5 apfu,
Z(Al+Fe3++2Ti) > 1.5 apfu and
ZLi > 0.5 apfu
The root-name mineral, leakeite is defined with Na, Mg, Al and (OH) as the dominant elements. Minerals with other dominant elements are named with pre-fixes in accordance with the guidelines established in the 2012 amphibole nomenclature.
On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclature in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
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) |
|---|---|---|---|---|---|---|---|
| 0001541 | Ferri-leakeite | Hawthorne F C, Oberti R, Ungaretti L, Grice J D (1992) Leakeite, NaNa2(Mg2Fe2Li)Si8O22(OH)2, a new alkali amphibole from the Kajlidongri manganese mine, Jhabua district, Madhya Pradesh, India American Mineralogist 77 1112-1115 |  | 1992 | Kajlidongri manganese mine, Jhabua district, Madhya Pradesh, India | 0 | 293 |
| 0001655 | Ferri-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Cannillo E (1994) The mechanism of Li incorporation in amphiboles American Mineralogist 79 443-451 | | 1994 | Kajlidongri, Madhya Pradesh, India | 0 | 293 |
| 0001656 | Ferri-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Cannillo E (1994) The mechanism of Li incorporation in amphiboles American Mineralogist 79 443-451 | | 1994 | Kajlidongri, Madhya Pradesh, India | 0 | 293 |
| 0001657 | Ferri-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Cannillo E (1994) The mechanism of Li incorporation in amphiboles American Mineralogist 79 443-451 | | 1994 | Kajlidongri, Madhya Pradesh, India | 0 | 293 |
| 0020051 | Ferri-leakeite | Oberti R, Camara F, Caballero J M (2004) Ferri-ottoliniite and ferriwhittakerite, two new end-members of the new Group 5 for monoclinic amphiboles American Mineralogist 89 888-893 | | 2004 | Pedriza massif, Sierra de Guadarrama, Spain | 0 | 293 |
| 0001588 | Ferro-ferri-fluoro-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Bottazzi P, Czamanske G K (1993) Li: an important component in igneous alkali amphiboles American Mineralogist 78 733-745 | | 1993 | Questa caldera, New Mexico | 0 | 293 |
| 0001589 | Ferro-ferri-fluoro-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Bottazzi P, Czamanske G K (1993) Li: an important component in igneous alkali amphiboles American Mineralogist 78 733-745 | | 1993 | Questa caldera, New Mexico | 0 | 293 |
| 0001590 | Ferro-ferri-fluoro-leakeite | Hawthorne F C, Ungaretti L, Oberti R, Bottazzi P, Czamanske G K (1993) Li: an important component in igneous alkali amphiboles American Mineralogist 78 733-745 | | 1993 | Questa caldera, New Mexico | 0 | 293 |
| 0014595 | Fluoro-leakeite | Oberti R, Camara F, Hawthorne F C, Ball N A (2009) Fluoro-aluminoleakeite, NaNa2(Mg2Al2Li)Si8O22F2, a new mineral of the amphibole group from Norra Karr, Sweden: description and crystal structure Mineralogical Magazine 73 817-824 | 2009 | Norra Karr, Granna, Jonkoping, Smaland, Sweden | 0 | 293 | |
| 0015898 | Ferri-fluoro-leakeite | Camara F, Hawthorne F C, Ball N A, Bekenova G, Stepanov A V, Kotelnikov P E (2010) Fluoroleakeite, NaNa2(Mg2Fe3+2Li)Si8O22F2, a new mineral of the amphibole group from the Verkhnee Espe deposit, Akjailyautas Mountains, Eastern Kazakhstan District, Kazakhstan: description and crystal structure Mineralogical Magazine 74 521-528 | 2010 | Verkhnee Espe deposit, Akjailyautas Mountains, Kazakhstan | 0 | 293 | |
| 0020505 | Ferri-fluoro-leakeite | Oberti R, Boiocchi M, Hawthorne F C, Kristiansen R (2014) Ferri-fluoro-leakeite: a second occurrence at Bratthagen (Norway), with new data on Zn partitioning and the oxo component in Na amphiboles Mineralogical Magazine 78 861-869 | 2014 | Bratthagen nepheline syenite pegmatite, Vestfold County, Norway | 0 | 293 |
CIF Raw Data - click here to close
Synonyms of Leakeite Root Name Group
Sodic amphibole (in part)
Relationship of Leakeite Root Name Group to other Species
Other Members of this group:
| Arfvedsonite Root Name Group | ANa2(Z2+4Fe3+}Si8O22(OH,F,Cl)2 | Mon. |
| Eckermannite Root Name Group | ANa2(Z2+4Al}Si8O22(OH,F,Cl)2 | Mon. |
| Glaucophane Root Name Group | ◻[Na2][Z2+3Al2]Si8O22(OH,F,Cl)2 | Mon. |
| Nybøite Root Name Group | ANa2(Z2+3Z3+2)(AlSi7O22)(OH,F,Cl)2 | |
| Riebeckite Root Name Group | ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2 | Mon. |
Group Members:
| Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 | Mon. 2/m : B2/m |
| Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
| Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 | Mon. 2/m : B2/m |
| Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. |
| Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
| Leakeite | NaNa2(Mg2Al2Li)(Si8O22)(OH)2 | |
| Mangano-ferri-fluoro-leakeite | NaNa2(Mn2+2Fe3+2Li)[Si8O22]F2 | Mon. |
| Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 | Mon. 2/m : B2/m |
| Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
| Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
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 Leakeite Root Name Group
mindat.org URL:
https://www.mindat.org/min-43507.html
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References for Leakeite Root Name Group
Localities for Leakeite Root Name Group
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Norra Kärr, Gränna, Jönköping, Jönköping County, Sweden