Goosecreekite (original) (raw)

A valid IMA mineral species

About GoosecreekiteHide

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Formula:

Ca[Al2Si6O16] · 5H2O

Crystal System:

Monoclinic

Name:

After the type locality, the New Goose Creek Quarry (Luck Company Quarry), Leesburg, Loudoun Co., Virginia, USA.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:1726:4

e3fbe986-d4dd-4f0e-842b-fa84c67cd839

IMA Classification of GoosecreekiteHide

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IMA Formula:

Ca(Si6Al2)O16 · 5H2O

Type description reference:

Dunn, P. J., Peacor, D. R., Newberry, N., Ramik, R. A. (1980) Goosecreekite, a new calcium aluminum silicate hydrate, possibly related to brewsterite and epistilbite. The Canadian Mineralogist, 18 (3) 323-327

Classification of GoosecreekiteHide

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9.GB.25

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings

77.1.7.3

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites

16.9.27

16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Pronunciation of GoosecreekiteHide

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Pronunciation:

Physical Properties of GoosecreekiteHide

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Comment:

Vitreous to pearly on crystal faces

Cleavage:

Perfect
Parallel to {010}

Density:

2.21(2) g/cm3 (Measured) 2.23 g/cm3 (Calculated)

Optical Data of GoosecreekiteHide

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RI values:

_n_α = 1.495(2) _n_β = 1.498(2) _n_γ = 1.502(2)

δ = 0.007

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Dispersion:

relatively weak (type description says not discernable)

Chemistry of GoosecreekiteHide

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Mindat Formula:

Ca[Al2Si6O16] · 5H2O

Crystallography of GoosecreekiteHide

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Crystal System:

Monoclinic

Class (H-M):

2 - Sphenoidal

Cell Parameters:

a = 7.401(3) Å, b = 17.439(36) Å, c = 7.293(3) Å
β = 105.44°

Ratio:

a:b:c = 0.424 : 1 : 0.418

Unit Cell V:

907.31 ų (Calculated from Unit Cell)

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0001062	Goosecreekite	Rouse R C, Peacor D R (1986) Crystal structure of the zeolite mineral goosecreekite, CaAl2Si6O16.5H2O American Mineralogist 71 1494-1501		1986	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Raade and Berg (2002), from Juvvatn, Norway

Geological EnvironmentHide

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Type Occurrence of GoosecreekiteHide

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General Appearance of Type Material:

Polycrystalline aggregates and as imperfect single crystals up to 2.0 mm in diameter

Place of Conservation of Type Material:

Type material in the Smithsonian Institution catalog no. 14588.
Holotype samples are preserved in the Royal Ontario Museum in Toronto, the American Museum of Natural History, the British Museum (N.H.) and the Mineralogical Museum at Harvard University.

Geological Setting of Type Material:

Reference:

Dunn, P.J., D.R. Peacor, N. Newberry, and R.A. Ramik (1980) Goosecreekite, a new calcium aluminum silicate hydrate, possibly related to brewsterite and epistilbite. Canadian Mineralogist: 18: 323-327.

Other Language Names for GoosecreekiteHide

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Relationship of Goosecreekite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of GoosecreekiteHide

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Other InformationHide

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Notes:

Goosecreekite is insoluble in 1:1 HCl or HNO3 with a one-hour immersion time.

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 GoosecreekiteHide

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References for GoosecreekiteHide

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Reference List:

Dunn, P. J., Peacor, D. R., Newberry, N., Ramik, R. A. (1980) Goosecreekite, a new calcium aluminum silicate hydrate, possibly related to brewsterite and epistilbite. The Canadian Mineralogist, 18 (3) 323-327

Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606

Localities for GoosecreekiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- 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.