Fencooperite

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

Fencooperite, etc.

Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

About FencooperiteHide

Fen Cooper

Formula:

Ba₆Fe³⁺₃Si₈O₂₃(CO₃)₂Cl₃ · H₂O

Colour:

Black

Lustre:

Adamantine, Vitreous

Hardness:

4½ - 5

Crystal System:

Trigonal

Name:

Named for California mineral collector Joseph Fenimore Cooper, Jr. (April 30, 1937, Santa Cruz, California - June 6, 2017, Santa Cruz, California). He was an avid collector of western U.S. minerals, especially in California and Nevada, and contributed to more than twenty publications.

Type Locality:

ⓘ Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa Co., California, USA

This page provides mineralogical data about Fencooperite.

Classification of FencooperiteHide

Physical Properties of FencooperiteHide

Optical Data of FencooperiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.723 n_ε = 1.711

Max Birefringence:

δ = 0.012

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

Surface Relief:

High

Pleochroism:

Strong

Comments:

n_ω = deep bluish-black
n_ε = light greenish-gray

Chemical Properties of FencooperiteHide

Crystallography of FencooperiteHide

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)
0005724	Fencooperite	Grice J D (2001) The crystal structure of fencooperite: Unique [Fe3O13] pinwheels cross-connected by [Si8O22] islands The Canadian Mineralogist 39 1065-1071		2001		0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Fencooperite' loop_ _publ_author_name 'Grice J D' _journal_name_full 'The Canadian Mineralogist' _journal_volume 39 _journal_year 2001 _journal_page_first 1065 _journal_page_last 1071 _publ_section_title ; The crystal structure of fencooperite: Unique [Fe3O13] pinwheels cross-connected by [Si8O22] islands ; _database_code_amcsd 0005724 _chemical_formula_sum 'Ba6 Fe3 Si8 C2 O31.38 (Cl1.62 H1.38)' _cell_length_a 10.7409 _cell_length_b 10.7409 _cell_length_c 7.0955 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 708.916 _exptl_crystal_density_diffrn 4.219 _symmetry_space_group_name_H-M 'P 3 m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,-x,z' '-y,x-y,z' 'x,x-y,z' '-x+y,-x,z' '-x+y,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 Ba1 0.82749 0.17251 0.00000 1.00000 0.02160 Ba2 0.51607 0.48393 0.50060 1.00000 0.01340 Fe 0.43730 0.56270 0.00100 1.00000 0.00980 Si1 0.00000 0.00000 0.72180 1.00000 0.00700 Si2 0.16780 0.33560 0.72840 1.00000 0.00920 Si3 0.00000 0.00000 0.27890 1.00000 0.00800 Si4 0.16690 0.83310 0.27040 1.00000 0.01180 C1 0.66667 0.33333 0.18100 1.00000 0.04900 C2 0.66667 0.33333 0.71600 1.00000 0.03900 O1 0.00000 0.00000 0.49800 1.00000 0.04700 O2 0.08220 0.16440 0.79700 1.00000 0.01900 O3 0.33160 -0.07770 0.80400 1.00000 0.02400 O4 0.16700 0.33400 0.50500 1.00000 0.06000 O5 0.08190 0.16380 0.19900 1.00000 0.01200 O6 0.59330 -0.07690 0.19600 1.00000 0.01900 O7 0.33333 0.66667 -0.00600 1.00000 0.01800 O8 0.59720 0.40280 0.17600 1.00000 0.06200 O9 0.73660 0.26340 0.71100 1.00000 0.03600 OW10 0.33333 0.66667 0.50400 1.00000 0.04800 Cl 0.83610 0.16390 0.50100 0.54000 0.03400 O-H 0.83610 0.16390 0.50100 0.46000 0.03400 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ba1 0.01010 0.01010 0.04470 0.00530 -0.00030 0.00030 Ba2 0.01320 0.01320 0.00910 0.00320 0.00010 -0.00010 Fe 0.00750 0.00750 0.01150 0.00150 -0.00020 0.00020 Si1 0.00500 0.00500 0.01000 0.00270 0.00000 0.00000 Si2 0.01500 0.00700 0.00200 0.00360 0.00080 0.00200 Si3 0.01000 0.01000 0.00400 0.00530 0.00000 0.00000 Si4 0.02000 0.02000 0.00600 0.01900 0.00110 -0.00110 O1 0.06500 0.06500 0.00900 0.03200 0.00000 0.00000 O2 0.03000 0.01400 0.00800 0.00700 0.00200 0.00500 O3 0.01400 0.03600 0.02500 0.01400 0.01100 0.01700 O4 0.11900 0.01900 0.00700 0.01000 -0.00200 -0.00400 O5 0.01500 0.01100 0.00900 0.00600 -0.00100 -0.00200 O6 0.01100 0.02500 0.02300 0.01000 0.00000 -0.01100 O7 0.00700 0.00700 0.04100 0.00300 0.00000 0.00000 O8 0.04100 0.04100 0.10000 0.01800 0.00800 -0.00800 O9 0.02700 0.02700 0.05500 0.00140 0.00400 -0.00400 OW10 0.05200 0.05200 0.04100 0.02600 0.00000 0.00000 Cl 0.03100 0.03100 0.03200 0.00800 0.00000 0.00000 O-H 0.03100 0.03100 0.03200 0.00800 0.00000 0.00000

Type Occurrence of FencooperiteHide

Synonyms of FencooperiteHide

Other Language Names for FencooperiteHide

Common AssociatesHide

Related Minerals - Nickel-Strunz GroupingHide

Other InformationHide

References for FencooperiteHide

Internet Links for FencooperiteHide

Localities for FencooperiteHide

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.

USA
California Fresno Co. Big Creek-Rush Creek Mining District Rush Creek deposit Big Creek ⓘ Esquire No. 7 claim	Grice, J.D. (2001) The crystal structure of fencooperite: Unique [Fe33+O13] pinwheels cross-connected by [Si8O22] islands. Canadian Mineralogist: 39: 1065-1071.; Jambor, J.L. and Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 765-768.
Mariposa Co. East Belt Clearing House Mining District Clearing House Trumbull Peak ⓘ Trumbull Peak Ba-silicate deposit (TL)	Roberts, A.C., Grice, J.D., Dunning, G.E., and Venance, K.E. (2001) Fencooperite, Ba6Fe33+Si8O23(CO3)2Cl3·H2O, a new mineral species from Trumbull Peak, Mariposa County, California. Canadian Mineralogist: 39: 1059–1064.; Jambor, J.L. and Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 765-768.