Kennygayite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Kennygayite
Formula:
[Pb4O2(OH)2](SO4)
Crystal System:
Triclinic
Name:
The name kennygayite is for American geologist, geoscience educator and mineral collector Norman Kennedy (Kenny) Gay (b. 1953, d. 2023). Mr. Gay had a 40+ year career as a licensed, professional geologist and was employed with the North Carolina Geological Survey since 1995, and a member of the adjunct faculty at Wesleyan College, Rocky Mount, North Carolina, as a professor of geology since 2001. In addition to his contributions to numerous abstracts and papers on the Geology and Mineralogy of North Carolina, Mr. Gay has held leadership roles in several geology and mineralogy clubs since 1990. He has built a large collection of worldwide minerals, but his main focus is on the mineralogy of North Carolina. He has extensively catalogued all known important North Carolina mineral occurrences along with the history of mineral collecting and mining in the state. Among the mineral occurrences that he has examined and collected is the Redmond mine. Although Mr. Gay is not responsible for the discovery of the unique mineral assemblage that has produced so many new species, including kennygayite, he was one of the first to collect mineral specimens at the mine and he got one of the authors (JBS) interested in the mine, thereby leading to the discovery of this assemblage.
Unique Identifiers
Mindat ID:
56159
Long-form identifier:
mindat:1:1:56159:8
GUID
(UUID V4):
(UUID V4):
5ef0a7f3-f9c1-4a1d-a6ea-c0ed7329fac8
IMA Classification of Kennygayite
Approved, Pending publication
Approval history:
IMA no. 2022-032
Classification of Kennygayite
7.BD.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
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 |
|---|---|---|
| Kgy | 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 Kennygayite
Mindat Formula:
[Pb4O2(OH)2](SO4)
Elements listed:
Crystallography of Kennygayite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.3785(5) Å, b = 7.4519(6) Å, c = 10.3112(8) Å
α = 75.234(5)°, β = 79.388(6)°, γ = 88.175(6)°
α = 75.234(5)°, β = 79.388(6)°, γ = 88.175(6)°
Ratio:
a:b:c = 0.856 : 1 : 1.384
Unit Cell V:
465.76 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.90 Å | (86) |
| 5.78 Å | (43) |
| 3.291 Å | (100) |
| 3.149 Å | (98) |
| 3.114 Å | (65) |
| 2.892 Å | (68) |
| 2.721 Å | (64) |
| 1.685 Å | (40) |
Type Occurrence of Kennygayite
Place of Conservation of Type Material:
mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76229, 76230 and 76231 (cotypes)
Related Minerals - Strunz-mindat Grouping
| 7.BD. | Adanite | Pb2(Te4+O3)(SO4) |
| 7.BD. | Hasanovite | KNa(MoO2)(SO4)2 |
| 7.BD. | Evanichite | Pb6Cr3+(Cr6+O4)2(SO4)(OH)7FCl |
| 7.BD.05 | Sulphohalite | Na6(SO4)2FCl |
| 7.BD.10 | Galeite | Na15(SO4)5F4Cl |
| 7.BD.10 | Schairerite | Na21(SO4)7ClF6 |
| 7.BD.15 | Kogarkoite | Na3(SO4)F |
| 7.BD.20 | Caracolite | Na3Pb2(SO4)3Cl |
| 7.BD.20 | Cesanite | Na3Ca2(SO4)3(OH) |
| 7.BD.20 | Aiolosite | Na4Bi(SO4)3Cl |
| 7.BD.25 | Burkeite | Na6(CO3)(SO4)2 |
| 7.BD.30 | Hanksite | Na22K(SO4)9(CO3)2Cl |
| 7.BD.35 | Cannonite | Bi2(SO4)O(OH)2 |
| 7.BD.40 | Lanarkite | Pb2(SO4)O |
| 7.BD.45 | Grandreefite | Pb2(SO4)F2 |
| 7.BD.50 | Itoite | Pb3Ge4+(SO4)2O2(OH)2 |
| 7.BD.55 | Chiluite | Bi3Te6+Mo6+O10.5 |
| 7.BD.60 | Hectorfloresite | Na9(SO4)4(IO3) |
| 7.BD.65 | Pseudograndreefite | Pb6(SO4)F10 |
| 7.BD.70 | Sundiusite | Pb10(SO4)O8Cl2 |
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 Kennygayite
mindat.org URL:
https://www.mindat.org/min-56159.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Kennygayite
Localities for Kennygayite
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.
Germany | |
| EDS- |
USA (TL) | |
| Miyawaki et al. (2022) |
Redmond Mine, Waterville Lake, Haywood County, North Carolina, USA