Heyite (original) (raw)

A valid IMA mineral species

About HeyiteHide

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Colour:

Marigold-orange, orange-brown

Crystal System:

Monoclinic

Name:

Named in 1973 by Sidney Arthur Williams in honor of Max Hutchinson Hey [March 11, 1904 Leyland, England, United Kingdom - January 24, 1984 Newcastle-upon-Tyne, England, United Kingdom]. Hey was a chemist and systematic mineralogist and Keeper of Minerals at the British Museum of Natural History. His several editions of Chemical Index of Mineralogy evaluated the validity of all the known published minerals and he helped form the International Mineralogical Association.

Identical with calderonite (U. Kolitsch, unpublished data; discreditation proposal to be submitted to IMA).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:1894:0

025bf063-64b2-4aa6-9121-d118add016c6

IMA Classification of HeyiteHide

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IMA Formula:

Pb5Fe2+2O4(VO4)2

Type description reference:

Classification of HeyiteHide

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8.BK.20

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
K : With medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1

41.2.2.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
2 : (AB)7(XO4)2Zq

21.4.20

21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni

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 HeyiteHide

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Pronunciation:

Physical Properties of HeyiteHide

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Colour:

Marigold-orange, orange-brown

Fracture:

Irregular/Uneven

Density:

6.3(2) g/cm3 (Measured) 6.284 g/cm3 (Calculated)

Optical Data of HeyiteHide

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RI values:

_n_α = 2.185(1) _n_β = 2.219(1) _n_γ = 2.266(1)

2V:

Measured: 89° , Calculated: 82°

δ = 0.081

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

Optical Extinction:

Y = b; X ∧ c = 36°.

Chemistry of HeyiteHide

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Mindat Formula:

Pb5Fe2+2(VO4)2O4

Crystallography of HeyiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.910(4) Å, b = 6.017(4) Å, c = 7.734(4) Å
β = 111.88(7)°

Ratio:

a:b:c = 1.481 : 1 : 1.285

Unit Cell V:

384.76 ų (Calculated from Unit Cell)

Morphology:

Elongate along the b axis and tabular on {100}. Forms include {001}, {100}, {110}, and {101}. Larger crystals show a composite structure with b axes diverging by a few degrees resulting in a structure like the 'bow ties' of prehnite.

Twinning:

Common on {110}, forming a “Y”-shaped doublet or “K”-shaped triplet.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of HeyiteHide

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General Appearance of Type Material:

Small, simple, monoclinic crystals to 0.4 mm.

Place of Conservation of Type Material:

The Natural History Museum, London, England, 1972,194; National Museum of Natural History, Washington, D.C., USA, 127424, 135056.

Geological Setting of Type Material:

In silicified limestone with other oxidation-zone minerals derived from galena, chalcopyrite, and pyrite. Occurs on and replaces corroded tungstenian wulfenite.

Associated Minerals at Type Locality:

Reference:

Williams, S.A. (1973) Heyite, Pb5Fe2(VO4)2O4, a new mineral from Nevada. Mineralogical Magazine: 39: 65-68.

Synonyms of HeyiteHide

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Other Language Names for HeyiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Notes:

Unaffected by cold 1:1 HNO3 but it slowly and completely dissolves when warmed. In 1:1 HCl it reacts quickly to form PbCl2. It quickly dissolves in hot 40% KOH but is unaffected when cold.

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 HeyiteHide

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References for HeyiteHide

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Localities for HeyiteHide

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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.