Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Naquite

A valid IMA mineral species

This page is currently not sponsored. Click here to sponsor this page.

Photos of Naquite (3)Discuss Naquite

Search Photos of Naquite

Edit Naquite Add Synonym Edit CIF structures Clear Cache

Naquite, etc.

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Naquite

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Naquite, etc.

Is River, Nizhnyaya Tura, Sverdlovsk Oblast, Russia

Naquite, etc.

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Naquite

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Naquite, etc.

Is River, Nizhnyaya Tura, Sverdlovsk Oblast, Russia

Naquite, etc.

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Naquite

Poltava series, Makiivka, Donetsk Oblast, Ukraine

Hide all sections | Show all sections

About NaquiteHide

Formula:

FeSi

Colour:

Steel grey, Tin white

Lustre:

Metallic

Hardness:

6½

Specific Gravity:

6.128 (Calculated)

Crystal System:

Isometric

Name:

Originally called ‘fersilicite’ (after its chemical composition), the species and new name have now been approved by the CNMNC (IMA 2010–010).

The name naquite is for Naqu (Nagchu) Prefecture, Tibet, near the type locality.

Type Locality:

ⓘ Luobusha ophiolite ("Luobusa ophiolite"), Qusum Co. (Qusong Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China

One of many natural Fe-Si phases; beside the approved species (listed below) you may want to compare Unnamed (Fe silicide I), Unnamed (Fe silicide II) and UM2000-60-Si:Fe.

Originally reported as fersilicite (published without approval) from Poltava series, Zachativsk station, Donets (Donetsk) region, Donets'k Oblast' (Donetsk Oblast'), Ukraine. The first extra-terrestrial confirmation is from the Khatyrka meteorite (Ma et al., 2016).

The name "fersilicide" sometimes found in the literature also refers to naquite.

Unique IdentifiersHide

Mindat ID:

40148

Long-form identifier:

mindat:1:1:40148:1

Similar NamesHide

Nauckite	A variety of 'Resin'
Nekoite	A valid IMA mineral species - grandfathered	Ca₃Si₆O₁₅ · 7H₂O

IMA Classification of NaquiteHide

IMA status:

Approved

Approval year:

2010

First published:

2012

Type description reference:

Shi, Nicheng, Bai, Wenji, Li, Guowu, Xiong, Ming, Yang, Jingsu, Ma, Zhesheng, Rong, He (2012) Naquite, FeSi, a New Mineral Species from Luobusha, Tibet, Western China. Acta Geologica Sinica - English Edition, 86 (3) 533-538 doi:10.1111/j.1755-6724.2012.00682.x

Classification of NaquiteHide

Strunz-mindat (2026):

1.BB.15

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
B : Silicides

Dana 8th ed.:

1.1.33.2

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group

Mineral SymbolsHide

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

Symbol	Source	Reference for Standard
Naq	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of NaquiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Steel grey, Tin white

Streak:

Grayish-black

Hardness:

6½ on Mohs scale

Comment:

Estimated

Tenacity:

Brittle

Cleavage:

None Observed
no apparent cleavage.

Fracture:

Conchoidal

Density:

6.128 g/cm³ (Calculated)

Chemistry of NaquiteHide

Mindat Formula:

FeSi

Element Weights:

Element	% weight
Fe	66.537 %
Si	33.463 %

Calculated from ideal end-member formula.

Elements listed:

Fe, Si - search for minerals with similar chemistry

Crystallography of NaquiteHide

Crystal System:

Isometric

Class (H-M):

23 - Tetartoidal

Space Group:

P2₁3

Setting:

P2₁3

Cell Parameters:

a = 4.486(4) Å

Unit Cell V:

90.28 Å³

Morphology:

As irregular crystals range from 15 to 50 μm in diameter.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

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)
0008632	Naquite	Vocadlo L, Knight K S, Price G D, Wood I G (2002) Thermal expansion and crystal structure of FeSi between 4 and 1173 K determined by time-of-flight neutron powder diffraction Physics and Chemistry of Minerals 29 132-139		2002		0	293
0018180	Naquite	Wever F, Moeller H (1930) Ueber den Kristallbau des Eisensilizides FeSi _cod_database_code 1011343 Zeitschrift fur Kristallographie 75 362-365		1930		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Naquite'
loop_
_publ_author_name
'Vocadlo L'
'Knight K S'
'Price G D'
'Wood I G'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 29 
_journal_year 2002
_journal_page_first 132
_journal_page_last 139
_publ_section_title
;
 Thermal expansion and crystal structure of FeSi between 4 and 1173 K
 determined by time-of-flight neutron powder diffraction
 Sample: T = 300 K, epsilon FeSi phase
;
_database_code_amcsd 0008632
_chemical_formula_sum 'Fe Si'
_cell_length_a 4.55070
_cell_length_b 4.55070
_cell_length_c 4.55070
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 94.240
_exptl_crystal_density_diffrn      5.916
_symmetry_space_group_name_H-M 'P 21 3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-z,-x,1/2+y'
  '-z,1/2+x,1/2-y'
  '1/2+z,1/2-x,-y'
  'z,x,y'
  '1/2+y,1/2-z,-x'
  '1/2-y,-z,1/2+x'
  '-y,1/2+z,1/2-x'
  'y,z,x'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2-y,-z'
  '1/2-x,-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Fe   0.13652   0.13652   0.13652
Si  -0.15760  -0.15760  -0.15760

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.1742 Å	(40)
2.5917 Å	(43)
2.0076 Å	(100)
1.8307 Å	(65)
1.1990 Å	(36)

Locality:

Luobusha ophiolite ("Luobusa ophiolite"), Qusum Co. (Qusong Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China

Reference:

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
5 : Primary asteroid phases	4.566–4.560
Stage 4b: Highly evolved igneous rocks	>3.0
36 : Carbonatites, kimberlites, and related igneous rocks
Stage 5: Initiation of plate tectonics	<3.5-2.5
38 : Ophiolites

Type Occurrence of NaquiteHide

Type Locality:

ⓘ Luobusha ophiolite ("Luobusa ophiolite"), Qusum Co. (Qusong Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China

General Appearance of Type Material:

As irregular crystals range from 15 to 50 μm in diameter and form an intergrowth with luobusaite.

Place of Conservation of Type Material:

Institute of Geology, Chinese Academy of Geological Sciences, Beijing, P.R. China, catalog no. 97-8-2

Geological Setting of Type Material:

In podiform chromitites

Associated Minerals at Type Locality:

Luobusaite

Reference:

Synonyms of NaquiteHide

Fersilicide

Fersilicite

IMA2010-010

Other Language Names for NaquiteHide

Dutch:Naquiet

German:Naquit

Common AssociatesHide

Associations Based on Photo Data:

6 photos of Naquite associated with Xifengite	Fe₅Si₃
5 photos of Naquite associated with Gupeiite	Fe₃Si
4 photos of Naquite associated with Linzhiite	FeSi₂
1 photo of Naquite associated with Luobusaite	Fe_0.84Si₂
1 photo of Naquite associated with Quartz	SiO₂
1 photo of Naquite associated with Toledoite	TiFeSi
1 photo of Naquite associated with Khamrabaevite	(Ti,V,Fe)C
1 photo of Naquite associated with Corundum	Al₂O₃

Related Minerals - Strunz-mindat Grouping Hide

1.BB.	Toledoite	TiFeSi	Orth. mm2 : Ima2
1.BB.	Zangboite	TiFeSi₂	Orth. mmm(2/m2/m2/m) : Pbam
1.BB.	Kangjinlaite	Ti₁₁Si₁₀	Tet. 4/mmm(4/m2/m2/m) : I4/mmm
1.BB.	Brownleeite	MnSi	Iso. 23 : P2₁3
1.BB.	Yeite	TiSi	Orth. mmm(2/m2/m2/m) : Pnma
1.BB.05	Mavlyanovite	Mn₅Si₃	Hex. 6/mmm(6/m2/m2/m) : P6₃/mcm
1.BB.05	Suessite	Fe₃Si	Iso. m3m(4/m32/m) : Im3m
1.BB.10	'UM2001-18-Si:CuPtSn'	(Cu,Pt)₄Si
1.BB.10	Perryite	(Ni,Fe)₅(Si,P)₂	Trig. 3m : R3c
1.BB.20	Linzhiite	FeSi₂	Tet. 4/mmm(4/m2/m2/m) : P4/mmm
1.BB.25	Luobusaite	Fe_0.84Si₂	Orth. mmm(2/m2/m2/m) : Cmca
1.BB.30	Gupeiite	Fe₃Si	Iso. m3m(4/m32/m) : Fm3m
1.BB.35	Hapkeite	Fe₂Si	Iso. m3m(4/m32/m) : Pm3m
1.BB.40	Xifengite	Fe₅Si₃	Hex. 6/mmm(6/m2/m2/m) : P6₃/mcm
1.BB.45	Carletonmooreite	Ni₃Si	Iso. m3m(4/m32/m) : Pm3m
1.BB.55	Palladosilicide	Pd₂Si	Hex. 6m2 : P62m
1.BB.65	Zhiqinite	TiSi₂	Orth. mmm(2/m2/m2/m) : Fddd

Other InformationHide

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 NaquiteHide

mindat.org URL:

https://www.mindat.org/min-40148.html
Please feel free to link to this page.

Search Engines:

Look for Naquite on Google

Look for Naquite images on Google

Look for Naquite on Bing

Naquite

About NaquiteHide

Unique IdentifiersHide

Similar NamesHide

IMA Classification of NaquiteHide

Classification of NaquiteHide

Mineral SymbolsHide

Physical Properties of NaquiteHide

Chemistry of NaquiteHide

Crystallography of NaquiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of NaquiteHide

Synonyms of NaquiteHide

Other Language Names for NaquiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for NaquiteHide

Related Minerals - Strunz-mindat Grouping Hide