Garronite-Ca
A valid IMA mineral species
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About Garronite-Ca
Formula:
Na2Ca5Al12Si20O64 · 27H2O
Colour:
White
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
2.13 - 2.17
Crystal System:
Tetragonal
Member of:
Name:
Named after the type locality (Garron Plateau, Co. Antrim, Northern Ireland). Renamed as garronite-Ca, when the species garronite-Na was approved by IMA in 2015.
Unique Identifiers
Mindat ID:
1653
Long-form identifier:
mindat:1:1:1653:3
GUID
(UUID V4):
(UUID V4):
f7421124-bbef-4a56-90c8-277116ac80f1
IMA Classification of Garronite-Ca
Approved
IMA Formula:
Ca3(Al6Si10O32) · 14H2O
First published:
1962
Classification of Garronite-Ca
9.GC.05
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
77.1.3.3
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.10.8
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
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 |
---|---|---|
Grn-Ca | 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 Garronite-Ca
Vitreous
Colour:
White
Streak:
White
Hardness:
4 - 5 on Mohs scale
Density:
2.13 - 2.17 g/cm3 (Measured) 2.201 g/cm3 (Calculated)
Optical Data of Garronite-Ca
Type:
Biaxial
Dispersion:
none
Chemistry of Garronite-Ca
Mindat Formula:
Na2Ca5Al12Si20O64 · 27H2O
Common Impurities:
Fe,Ba,K
Chemical Analysis
Oxide wt%:
1 | 2 | |
---|---|---|
SiO2 | 45.15 % | 44.96 % |
Al2O3 | 23.35 % | 23.61 % |
Fe2O3 | 0.02 % | 0.02 % |
CaO | 10.32 % | 10.52 % |
BaO | 0.09 % | 0.14 % |
Na2O | 2.96 % | 2.52 % |
K2O | 0.16 % | 0.21 % |
H2O | 18.74 % | 17.97 % |
Total: | 100.79 % | 99.95 % |
Sample references:
Crystallography of Garronite-Ca
Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4m2
Cell Parameters:
a = 9.9266(2) Å, c = 10.3031(3) Å
Ratio:
a:c = 1 : 1.038
Unit Cell V:
1,015.24 ų (Calculated from Unit Cell)
Morphology:
Radiating aggregates filling voids. Rarely dipyramidal, indistinct crystals.
Twinning:
Observed optically on a very fine scale; possibly a domain structure.
Comment:
Z = 0.5. Possibly orthorhombic, pseudo-tetragonal.
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) |
---|---|---|---|---|---|---|---|
0001442 | Garronite-Ca | Artioli G (1992) The crystal structure of garronite American Mineralogist 77 189-196 | 1992 | Goble, Oregon | 0 | 293 | |
0001443 | Garronite-Ca | Artioli G (1992) The crystal structure of garronite American Mineralogist 77 189-196 | 1992 | Fara Vicentina, Italy | 0 | 293 | |
0006644 | Garronite-Ca | Schropfer L, Joswig W (1997) Structure analyses of a partially dehydrated synthetic Ca-garronite single crystal under different T, pH2O conditions European Journal of Mineralogy 9 53-66 | 1997 | synthetic | 0 | 298 | |
0006645 | Garronite-Ca | Schropfer L, Joswig W (1997) Structure analyses of a partially dehydrated synthetic Ca-garronite single crystal under different T, pH2O conditions European Journal of Mineralogy 9 53-66 | 1997 | synthetic | 0 | 298 | |
0006646 | Garronite-Ca | Schropfer L, Joswig W (1997) Structure analyses of a partially dehydrated synthetic Ca-garronite single crystal under different T, pH2O conditions European Journal of Mineralogy 9 53-66 | 1997 | synthetic | 0 | 418 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Image Loading
Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.12 Å | (100) |
3.14 Å | (100) |
2.66 Å | (100) |
7.15 Å | (80) |
4.95 Å | (80) |
4.07 Å | (60) |
3.22 Å | (60) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) |
Type Occurrence of Garronite-Ca
General Appearance of Type Material:
Radiating aggregates completely filling amygdales, to 2 cm.
Geological Setting of Type Material:
In amygdales in basalt
Associated Minerals at Type Locality:
Reference:
Walker, G.P.L. (1962) Garronite, a new zeolite, from Ireland and Iceland. Mineralogical Magazine: 33: 173-186.
Other Language Names for Garronite-Ca
Relationship of Garronite-Ca to other Species
Common Associates
Associated Minerals Based on Photo Data:
19 photos of Garronite-Ca associated with Analcime | Na(AlSi2O6) · H2O |
11 photos of Garronite-Ca associated with Phillipsite Subgroup | |
5 photos of Garronite-Ca associated with Phillipsite-Ca | Ca3(Si10Al6)O32 · 12H2O |
3 photos of Garronite-Ca associated with Basalt | |
2 photos of Garronite-Ca associated with Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
2 photos of Garronite-Ca associated with Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
1 photo of Garronite-Ca associated with Albite | Na(AlSi3O8) |
1 photo of Garronite-Ca associated with Cowlesite | CaAl2Si3O10 · 6H2O |
1 photo of Garronite-Ca associated with Thomsonite-Ca | NaCa2[Al5Si5O20] · 6H2O |
1 photo of Garronite-Ca associated with Prehnite | Ca2Al2Si3O10(OH)2 |
Related Minerals - Strunz-mindat Grouping
9.GC. | Garronite-Na | Na6(Al6Si10O32) · 8.5H2O |
9.GC. | Gismondine-Sr | Sr4(Si8Al8O32) · 9H2O |
9.GC.05 | Amicite | K2Na2Al4Si4O16 · 5H2O |
9.GC.05 | Gismondine-Ca | CaAl2Si2O8 · 4H2O |
9.GC.05 | Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
9.GC.05 | Gismondine-Ba | Ba2Al4Si4O16 · 4-6H2O |
9.GC.10 | Harmotome | Ba2(Si12Al4)O32 · 12H2O |
9.GC.10 | Phillipsite-Ca | Ca3(Si10Al6)O32 · 12H2O |
9.GC.10 | Phillipsite-K | (K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
9.GC.10 | Phillipsite-Na | (Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O |
9.GC.10 | Flörkeite | (K3Ca2Na)[Al8Si8O32] · 12H2O |
9.GC.10 | Martinandresite | Ba2(Al4Si12O32) · 10H2O |
9.GC.15 | Merlinoite | (K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O |
9.GC.20 | Mazzite-Mg | (Mg,K,Ca)5(Si26Al10)O72 · 28H2O |
9.GC.20 | Mazzite-Na | Na8[Al4Si14O36]2 · 30H2O |
9.GC.25 | Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O |
9.GC.30 | Boggsite | Ca8Na3(Si,Al)96O192 · 70H2O |
9.GC.35 | Paulingite-Ca | (Ca,K,Na,Ba, ◻)10 (Si, Al)42O84 · 34H2O |
9.GC.35 | Paulingite-K | (K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O |
9.GC.35 | Paulingite-Na | (Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2O |
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 Garronite-Ca
mindat.org URL:
https://www.mindat.org/min-1653.html
Please feel free to link to this page.
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External Links:
References for Garronite-Ca
Reference List:
Localities for Garronite-Ca
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.
Antarctica | |
| Tschernich (1992) |
Canada | |
| Rocks&Min 66:44-45 +1 other reference |
| Van Velthuizen et al. (2006) |
| Hudon et al. (2006) |
| Tschernich (1992) |
| History +1 other reference |
| Tarassoff et al. (2006) |
Costa Rica | |
| Micro Probe Volume VII Number 7 Spring ... +1 other reference |
Czech Republic | |
| Pauliš et al. (2015) +1 other reference |
France | |
| Pongiluppi D (1976) |
| Bull. Minéral. +1 other reference |
Germany | |
| Tschernich (1992) |
| Wittern (2001) |
| Hentschel (1983) |
Hungary | |
| Szakáll & Gatter: Hun. Min. Spec. |
| Szakáll & Gatter: Hun. Min.Spec. +1 other reference |
Iceland | |
| Betz (1981) |
| Walker (1962) |
Walker (1962) | |
Walker (1962) | |
Walker (1962) | |
Walker (1962) | |
Walker (1962) | |
| Walker (1962) |
| Walker (1962) |
Walker (1962) +1 other reference | |
Walker (1962) | |
| Walker (1962) |
Walker (1962) | |
| Walker (1962) |
Walker (1962) | |
Walker (1962) | |
Mineralogical Magazine 1962 33 : ... | |
Walker (1962) | |
| Walker (1962) |
Walker (1962) | |
| Walker (1962) |
Walker (1962) | |
Walker (1962) | |
Selbekk et al. (2004) | |
| Zeolite collection of Volker Betz |
Israel | |
| Kruszewski et al. (2021) |
Italy | |
| - (n.d.) |
| Passaglia et al. (1992) +3 other references |
- (n.d.) +2 other references | |
| Boscardin et al. (2011) +2 other references |
Japan | |
| Matsuyama et al (2005) |
Portugal | |
| Pedro Alves collection and analytical ... |
Slovakia | |
| Ďuďa |
Spain | |
| Calvo (2019) |
UK | |
| Walker (1962) |
| G. P. L. Walker (1960) +2 other references |
| Walker (1962) |
Walker (1962) | |
| Artioli et al. (1994) |
| Walker (1962) |
Walker (1962) | |
Walker (1962) | |
| Walker (1962) |
Trevor Boyd Collection +1 other reference | |
| Walker (1962) |
Walker (1962) | |
| Museum Victoria Specimen No. M47717 |
| [Specimen in the Natural History Museum |
USA | |
| Tschernich (1992) +1 other reference |
| Rocks & Minerals 79:4 |
Wilson (1988) | |
| Micro Probe Vol. 6 No. 5 Fall 1987 +1 other reference |
| Micro Probe Vol. 7 No. 9 Spring 1994 |
| Micro Probe Volume VI Number 4 |
| Micro Probe VolumeVII Number 3 Spring ... |
| Tschernich (1992) |
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San Giorgio di Perlena, Fara Vicentino, Vicenza Province, Veneto, Italy