Schorlomite and Nepheline

ID	197
Mineral	Schorlomite Nepheline
Location	Bou Agrao - Beni Mellal-Khenifra - Morocco
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Schorlomite information at mindat.org View Nepheline information at mindat.org

ID	3579
Long ID	1:1:3579:4
Formula	`Ca₃Ti₂(SiFe³⁺₂)O₁₂`
IMA Status	0 1
Occurrence	Magnet Cove. T 36. R 17 W. S 21. Hot Springs Co., Arkansas.
Other Occurrences	carbonatites, syenites, and phonolites; also in skarns
Discovery Year	1846
Tenacity	brittle
Colour	Grayish black, black, may be tarnished blue; deep reddish brown
Hardness (min)	7.0
Hardness (max)	7.5
Lustre	Vitreous, Metallic
About the name	For its visual resemblance to schorl
Streak	black to red-orange or orange-brown
Crystal System	Isometric
Cleavage Type	Poor/Indistinct
Fracture type	Conchoidal
Morphology	trapezohedra and dodecahedra, up to 2 cm
Publication Year	1846
key_elements	0
shortcode_ima	Slo
Group	Schorlomite Group

ID	2880
Long ID	1:1:2880:2
Formula	`Na₃K(Al₄Si₄O₁₆)`
IMA Status	0 1
Other Occurrences	Characteristic of alkaline igneous rocks.
Discovery Year	1801
Diapheny	Transparent,Opaque
Cleavage	Poor on {10_10}, {0001}
Tenacity	brittle
Colour	White, grey, yellowish
Hardness (min)	5.5
Hardness (max)	6.0
About the name	From the Greek "nephele" for "cloud" since it turns cloudy when treated with strong acid.
Streak	White
Crystal System	Hexagonal
Cleavage Type	Poor/Indistinct
Fracture type	Sub-Conchoidal
Morphology	Stout prisms, granular, compact, massive.
Twinning	On {10_10}, {33_65}, {11_22}.
shortcode_ima	Nph
Group	Feldspathoid

Price: € 40

Dimensions: Not registered

Weight: 188 g

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