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Guastoniite-(Y)
A valid IMA mineral species - pending publication
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Formula:
Pb4(YCa)(Si8B4O28)F
Crystal System:
Triclinic
Member of:
Name:
For Dr. Alessandro Guastoni (1966–2022), mineralogist and Curator of Mineralogy at the University of Padova. He tragically passed away from an accident that occurred while he was collecting minerals in Lake Cuomo, Italy.
This page provides mineralogical data about Guastoniite-(Y).
Unique Identifiers
Mindat ID:
471959
Long-form identifier:
mindat:1:1:471959:1
Similar Names
IMA Classification of Guastoniite-(Y)
Classification of Guastoniite-(Y)
9.CH.05
9 : SILICATES (Germanates)
C : Cyclosilicates
H : [Si4O12]8- 4-membered double rings
9 : SILICATES (Germanates)
C : Cyclosilicates
H : [Si4O12]8- 4-membered double rings
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 for Standard |
|---|---|---|
| Gsn-Y | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Guastoniite-(Y)
Mindat Formula:
Pb4(YCa)(Si8B4O28)F
Element Weights:
Crystallography of Guastoniite-(Y)
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 11.114(2) Å, b = 10.818(2) Å, c = 11.133(2) Å
α = 90.43(3)°, β = 90.03(3)°, γ = 90.01(3)°
α = 90.43(3)°, β = 90.03(3)°, γ = 90.01(3)°
Ratio:
a:b:c = 1.027 : 1 : 1.029
Unit Cell V:
1,338.50 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.76 Å | (100) |
| 7.46 Å | (63) |
| 3.74 Å | (95) |
| 3.70 Å | (60) |
| 3.48 Å | (68) |
| 3.40 Å | (54) |
| 2.93 Å | (40) |
| 2.59 Å | (37) |
Type Occurrence of Guastoniite-(Y)
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 6206/1
Synonyms of Guastoniite-(Y)
Other Language Names for Guastoniite-(Y)
Dutch:Guastoniiet-(Y)
German:Guastoniit-(Y)
Relationship of Guastoniite-(Y) to other Species
Member of:
Other Members of Hyalotekite Group:
| Hyalotekite | (Ba,Pb,K)4(Ca,Y)2(B,Be)2(Si,B)2Si8O28(F,Cl) | Tric. 1 : P1 |
| Itsiite | Ba4Ca2[Si8B4O28]◻ | Tet. 42m : I42m |
| Kapitsaite-(Y) | (Ba,K,Pb)4(Y,Ca)2Si8(B,Si)4O28F | Tric. 1 : P1 |
| Khvorovite | (Pb,Ba,K)4Ca2[Si8B2(Si,B)2O28]F | Tric. |
Related Minerals - Strunz-mindat Grouping
| 9.CH.05 | Khvorovite | (Pb,Ba,K)4Ca2[Si8B2(Si,B)2O28]F |
| 9.CH.05 | Kapitsaite-(Y) | (Ba,K,Pb)4(Y,Ca)2Si8(B,Si)4O28F |
| 9.CH.05 | Hyalotekite | (Ba,Pb,K)4(Ca,Y)2(B,Be)2(Si,B)2Si8O28(F,Cl) |
| 9.CH.05 | Itsiite | Ba4Ca2[Si8B4O28]◻ |
| 9.CH.10 | Arapovite | (K1-x◻x)(Ca,Na)2U4+Si8O20 (x ~ 0.5) |
| 9.CH.10 | Steacyite | K0.3(Na,Ca)2ThSi8O20 |
| 9.CH.10 | Turkestanite | (K,◻)(Ca,Na)2ThSi8O20 · nH2O |
| 9.CH.10 | Iraqite-(La) | KCa2(La,Ce,Th)Si8O20 |
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 Guastoniite-(Y)
mindat.org URL:
https://www.mindat.org/min-471959.html
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References for Guastoniite-(Y)
Localities for Guastoniite-(Y)
Showing 1 localities.
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.
Tajikistan (TL) | |
| Agakhanov et al. (2025) |
