Hawthorneite

John B. Hawthorne

Formula:

BaMgTi₃Cr₄Fe²⁺₂Fe³⁺₂O₁₉

Colour:

Black or brown

Lustre:

Metallic

Hardness:

5½ - 6

Specific Gravity:

5.02 (Calculated)

Crystal System:

Hexagonal

Member of:

Magnetoplumbite Group

Name:

Named by I.E. Grey, I.C. Madsen, and S.E. Haggerty in 1987 in honor of John Barry Hawthorne (1934–2018), former Chief Geologist (Diamonds), DeBeers Consolidated Mines, South Africa, in honor of his contributions to studies of the upper mantle.

Type Locality:

ⓘ Bultfontein Mine, KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine), Kimberley, Sol Plaatje, Frances Baard, Northern Cape, South Africa

Classification of HawthorneiteHide

Pronounciation of HawthorneiteHide

Physical Properties of HawthorneiteHide

Optical Data of HawthorneiteHide

Chemical Properties of HawthorneiteHide

Crystallography of HawthorneiteHide

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0001094	Hawthorneite	Grey I E, Madsen I C, Haggerty S E (1987) Structure of a new upper-mantle, magnetoplumbite-type phase, Ba(Ti3Cr4Fe4Mg)O19 American Mineralogist 72 633-636		1987		0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Hawthorneite' loop_ _publ_author_name 'Grey I E' 'Madsen I C' 'Haggerty S E' _journal_name_full 'American Mineralogist' _journal_volume 72 _journal_year 1987 _journal_page_first 633 _journal_page_last 636 _publ_section_title ; Structure of a new upper-mantle, magnetoplumbite-type phase, Ba(Ti3Cr4Fe4Mg)O19 ; _database_code_amcsd 0001094 _chemical_formula_sum 'Ba.85 K.12 Cr4.72 Fe3.54 Mg.72 Ti3.02 O19' _cell_length_a 5.871 _cell_length_b 5.871 _cell_length_c 23.06 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 688.357 _exptl_crystal_density_diffrn 4.972 _symmetry_space_group_name_H-M 'P 63/m m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' '-y,-x,z' 'y,x,-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x,x-y,z' '-x,-x+y,-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x+y,y,z' 'x-y,-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Ba 0.33333 0.66667 0.75000 0.85000 0.00887 K 0.33333 0.66667 0.75000 0.12000 0.00887 Cr1 0.00000 0.00000 0.00000 1.00000 0.00456 Fe2 0.00000 0.00000 0.25710 0.50000 0.00887 Fe3 0.33333 0.66667 0.02680 0.64000 0.00621 Mg3 0.33333 0.66667 0.02680 0.36000 0.00621 Ti4 0.33333 0.66667 0.18880 1.00000 0.00443 Cr5 0.16620 0.33240 -0.10630 0.62000 0.00557 Ti5 0.16620 0.33240 -0.10630 0.17000 0.00557 Fe5 0.16620 0.33240 -0.10630 0.21000 0.00557 O1 0.00000 0.00000 0.15120 1.00000 0.00557 O2 0.33333 0.66667 -0.05990 1.00000 0.00545 O3 0.18780 0.37560 0.25000 1.00000 0.01722 O4 0.14830 0.29660 0.05480 1.00000 0.00494 O5 0.50200 0.00400 0.15080 1.00000 0.00621

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Type Occurrence of HawthorneiteHide

Synonyms of HawthorneiteHide

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Relationship of Hawthorneite to other SpeciesHide

Related Minerals - Nickel-Strunz GroupingHide

Related Minerals - Dana Grouping (8th Ed.)Hide

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

Other InformationHide

References for HawthorneiteHide

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Localities for HawthorneiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.

China
Shandong Linyi Mengyin County ⓘ Mengyin Kimberlite field	Qi Lu, Huifang Liu, and Ping Xiao (2007): Geological Science and Technology Information 26(2), 1-7
Russia
Sakha Republic (Yakutia) Mirninsky District Daldyn ⓘ Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe)	Rezvukhin, D.I.; Alifirova, T.A.; Golovin, A.V.; Korsakov, A.V. (2020) A Plethora of Epigenetic Minerals Reveals a Multistage Metasomatic Overprint of a Mantle Orthopyroxenite from the Udachnaya Kimberlite. Minerals 10, 264.
South Africa (TL)
Northern Cape Frances Baard Sol Plaatje Kimberley KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine) ⓘ Bultfontein Mine (TL)	Amer.Min.(1989), 74, 668-675; Cairncross, B., Dixon, R. (1995) Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, PO Box 44283, Linden 2104, South Africa.