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Tiptopite

A valid IMA mineral species
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07335370017057450868305.jpg
Tiptopite, etc.

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
08720910017057331687324.jpg
Tiptopite

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
04684980017057331731783.jpg
Tiptopite, etc.

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
08056650017056129753334.jpg
Tiptopite, etc.

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
03654130017056975524802.jpg
Tiptopite

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
04684980017057331731783.jpg
Tiptopite, etc.

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
07335370017057450868305.jpg
Tiptopite, etc.

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
08720910017057331687324.jpg
Tiptopite

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
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About TiptopiteHide

08965510017057450882507.jpg
Tip Top mine pit

Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
Formula:
K2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
2.65
Crystal System:
Hexagonal
Name:
Named after its discovery locality, the Tip Top pegmatite, near Custer, South Dakota, USA
This page provides mineralogical data about Tiptopite.


Unique IdentifiersHide

Mindat ID:
3973
Long-form identifier:
mindat:1:1:3973:0
GUID
(UUID V4):
9d2f996e-7261-4fee-8a94-3e01b2cc62e6

IMA Classification of TiptopiteHide

Classification of TiptopiteHide

Strunz-mindat (2024):
8.DA.25

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
A : With small (and occasionally larger) cations
Dana 8th ed.:
42.6.11.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq·xH2O
Hey's CIM Ref.:
19.3.10

19 : Phosphates
3 : Phosphates of Be and Mg

Mineral SymbolsHide

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

SymbolSourceReference
TptIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TiptopiteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.65(2) g/cm3 (Measured)    2.52 g/cm3 (Calculated)
Comment:
Average density (4 measurements) in Grice et al. (1985)

Optical Data of TiptopiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.551(1) nε = 1.559(1)
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemistry of TiptopiteHide

Mindat Formula:
K2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O
Elements listed:
Be, Ca, H, K, Li, Na, O, P - search for minerals with similar chemistry

Crystallography of TiptopiteHide

Crystal System:
Hexagonal
Class (H-M):
6 - Pyramidal
Space Group:
P63
Cell Parameters:
a = 11.655(5) Å, c = 4.692(2) Å
Ratio:
a:c = 1 : 0.403
Unit Cell V:
551.97 ų
Z:
1
Morphology:
Simple; elongate hexagonal prism {100} and a basal pinacoid {001}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001111TiptopitePeacor D R, Rouse R C, Ahn J-H (1987) Crystal structure of tiptopite, a framework beryllophosphate isotypic with basic cancrinite American Mineralogist 72 816-82019870293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.966 Å(100)
2.525 Å(90)
2.348 Å(70)
2.223 Å(60)
1.459 Å(60)
3.364 Å(50)
2.077 Å(50)
3.808 Å(40)
3.652 Å(40)
1.943 Å(40)
1.606 Å(40)
Comments:
Tip Top Mine, South Dakota, USA. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]

Type Occurrence of TiptopiteHide

Type Locality:
ⓘ Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
General Appearance of Type Material:
Radial sprays of colorless needles. Individual crystals are prismatic and sometimes have cavernous tubes at the ends. Crystals are generally 1-2 mm in length and less than 0.1 mm in width.
Place of Conservation of Type Material:
National Museum of Natural Sciences, Ottawa, Ontario, Canada, number NMNS #48833.
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, number #149609.
Museum of Geology, South Dakota School of Mines, Rapid City, South Dakota, USA, numbers SDSM & T #81-5102.
Geological Setting of Type Material:
Phosphate-rich granite pegmatite, usually along fracture surfaces in beryl.
Associated Minerals at Type Locality:
TriphyliteQuartzMuscoviteMicroclineFluorapatite
ElbaiteColumbite-TantaliteBerylAlbite
Reference:
Grice, J.D., Peacor, D.R., Robinson, G.W., Van Velthuizen, J., Roberts, W.L., Campbell, T.J., Dunn, P.J. (1985) Tiptopite (Li,K,Na,Ca, )8Be6(PO4)6(OH)4, a new mineral species from the Black Hills, South Dakota. The Canadian Mineralogist: 23: 43-46.
Download:
https://rruff.info/rruff_1.0/uploads/CM23_43.pdf

Synonyms of TiptopiteHide

Other Language Names for TiptopiteHide

German:Tiptopit
Spanish:Tiptopita

Common AssociatesHide

Associated Minerals Based on Photo Data:
38 photos of Tiptopite associated with RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2O
36 photos of Tiptopite associated with MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
23 photos of Tiptopite associated with EnglishiteK3Na2Ca10Al15(PO4)21(OH)7 · 26H2O
13 photos of Tiptopite associated with BerylBe3Al2(Si6O18)
11 photos of Tiptopite associated with HurlbutiteCaBe2(PO4)2
7 photos of Tiptopite associated with FairfielditeCa2Mn2+(PO4)2 · 2H2O
6 photos of Tiptopite associated with FransoletiteCa3Be2(PO4)2(PO3OH)2 · 4H2O
5 photos of Tiptopite associated with PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O
5 photos of Tiptopite associated with Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O
2 photos of Tiptopite associated with RobertsiteCa2Mn3+3(PO4)3O2 · 3H2O

Related Minerals - Strunz-mindat GroupingHide

8.DA.05BearsiteBe2(AsO4)(OH) · 4H2OMon.
8.DA.05MoraesiteBe2(PO4)(OH) · 4H2OMon. m : Bb
8.DA.10RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
8.DA.10ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.10GreifensteiniteCa2Fe2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.10AtencioiteCa2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2OTric. 1 : P1
8.DA.10RuifrancoiteCa2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2OMon. 2/m : B2/b
8.DA.10GuimarãesiteCa2Be4Zn5(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.10FootemineiteCa2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2OTric. 1 : P1
8.DA.10OkruschiteCa2Mn2+5Be4(AsO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.15UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon. 2/m
8.DA.20WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon. m : Bb
8.DA.40SpenceriteZn4(PO4)2(OH)2 · 3H2OMon. 2/m : P2/b
8.DA.45GlucineCaBe4(PO4)2(OH)4 · 0.5H2O

Fluorescence of TiptopiteHide

In UV light:
Does not fluoresce

Other InformationHide

Notes:
Only slightly soluble in 30% HCl.
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 TiptopiteHide

References for TiptopiteHide

Localities for TiptopiteHide

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

- 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.
USA (TL)
 
  • South Dakota
    • Custer County
      • Custer Mining District
        • Fourmile
Grice et al. (1985)
Quick NavTopAbout TiptopiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
 
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