Sinjarite (original) (raw)

A valid IMA mineral species

About SinjariteHide

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Lustre:

Vitreous, Resinous

Crystal System:

Tetragonal

Name:

Named after the Sinjar Wadi, Iraq, its discovery locality. It is pronounced sĭ·njārait.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3673:9

b58f942d-f3e8-4f80-886d-f7c72c55ddc3

IMA Classification of SinjariteHide

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Type description reference:

Classification of SinjariteHide

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3.BB.25

3 : HALIDES
B : Simple halides, with H2O
B : M:X = 1:2

9.2.5.1

9 : NORMAL HALIDES
2 : AX2

8.4.8

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
4 : Halides of the alkaline earths and Mg

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.

Physical Properties of SinjariteHide

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Cleavage:

Very Good
Well developed prismatic

Density:

1.66 g/cm3 (Measured) 1.60 g/cm3 (Calculated)

Optical Data of SinjariteHide

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RI values:

_n_α = 1.540 _n_β = 1.540

δ = 1.540

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

Chemistry of SinjariteHide

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Mindat Formula:

CaCl2 · 2H2O

Crystallography of SinjariteHide

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Crystal System:

Tetragonal

Cell Parameters:

a = 7.21 Å, c = 5.86 Å

Unit Cell V:

304.63 ų (Calculated from Unit Cell)

Morphology:

Elongated prismatic crystals

Comment:

Point Group: n.d.; Space Group: n.d. (synthetic).

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0009590	Sinjarite	Leclaire A, Borel M M (1977) Le dichlorure de calcium dihydrate Acta Crystallographica B33 1608-1610		1977	synthetic	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of SinjariteHide

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Place of Conservation of Type Material:

Museum of Natural History, University of Mosul.

Geological Setting of Type Material:

Braided wadi filling in area of limestones

Reference:

Aljubouri, Z.A., Aldabbagh, S.M. (1980) Sinjarite, a new mineral from Iraq. Mineralogical Magazine: 43: 643-645.

Synonyms of SinjariteHide

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Other Language Names for SinjariteHide

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Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Special Storage/
Display Requirements:

Extremely hydroscopic

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 SinjariteHide

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References for SinjariteHide

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Localities for SinjariteHide

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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.