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Chumar ruby digs, Ruby Valley, Dhading District, P3 Bagmati Pradesh, Nepali
Regional Level Types
Chumar ruby digsGroup of Diggingses
Ruby ValleyMunicipality (Rural)
Dhading DistrictDistrict
P3 Bagmati PradeshProvince
NepalCountry

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Latitude & Longitude (WGS84):
28° 15' 17'' North , 85° 0' 51'' East
Latitude & Longitude (decimal):
28.25500,85.01417
GeoHash:
G#: tvh2wx9mm
GRN:
N19E54
Type:
Group of Diggingses
KΓΆppen climate type:
Dwc : Monsoon-influenced subarctic climate
Mindat Locality ID:
29862
Long-form identifier:
mindat:1:2:29862:6
GUID (UUID V4):
1214dfe4-0170-47a7-8676-57f127d80d11
Other/historical names associated with this locality:
Chhumar Mine; Chumar ruby mines


Ruby deposit situated at 4,300 m high in the south flank of Ganesh Himal Massif, about five kilometers west of Ruyil Ruby Mine. Chumar deposit is very close to the northwest boundary of Dhading District, in Lapa VDC. The host rock is a low-grade dolomitic marble aged Lower Paleozoic.

*... Chumar deposit extends east-west for about 550 m, with a central thickness of approximately 150 m. At the west end, the dolomitic body is bounded by a sharp fault trending N60Β°W, dipping steeply to the northeast. The east end of the body tapers down to a tail, with no fault line at the boundary. Distinct bedding in the dolomite body, which now consists of large, eroded domes, strikes east-west throughout all but the extremities, where it is bent to the northwest, creating a sigmoid shape. The seams, which are about 8 m apart and dip 32Β°, vary widely in thickness but average about 20 cm; they are sometimes folded on a small scale.
*from Rubies and fancy-color sapphires from Nepal (see references)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Brucite
Formula: Mg(OH)2
β“˜ Calcite
Formula: CaCO3
β“˜ Corundum
Formula: Al2O3
β“˜ Corundum var. Ruby
Formula: Al2O3
β“˜ Corundum var. Sapphire
Formula: Al2O3
References:
none
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Kyanite
Formula: Al2(SiO4)O
β“˜ Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Rutile
Formula: TiO2
β“˜ 'Scapolite'
β“˜ Sphalerite
Formula: ZnS
β“˜ Talc
Formula: Mg3Si4O10(OH)2
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Corundum
var. Ruby		4.CB.05Al2O3
β“˜4.CB.05Al2O3
β“˜var. Sapphire4.CB.05Al2O3
β“˜Rutile4.DB.05TiO2
β“˜Brucite4.FE.05Mg(OH)2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Kyanite9.AF.15Al2(SiO4)O
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Tremolite9.DE.10β—»Ca2Mg5(Si8O22)(OH)2
β“˜Talc9.EC.05Mg3Si4O10(OH)2
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
β“˜Margarite9.EC.30CaAl2(Al2Si2O10)(OH)2
Unclassified
β“˜'Scapolite'-
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ BruciteMg(OH)2
Hβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Hβ“˜ MargariteCaAl2(Al2Si2O10)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Hβ“˜ TalcMg3Si4O10(OH)2
Hβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ DolomiteCaMg(CO3)2
OOxygen
Oβ“˜ BruciteMg(OH)2
Oβ“˜ CalciteCaCO3
Oβ“˜ CorundumAl2O3
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Oβ“˜ KyaniteAl2(SiO4)O
Oβ“˜ MargariteCaAl2(Al2Si2O10)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ Corundum var. RubyAl2O3
Oβ“˜ RutileTiO2
Oβ“˜ Corundum var. SapphireAl2O3
Oβ“˜ TalcMg3Si4O10(OH)2
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mgβ“˜ BruciteMg(OH)2
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgβ“˜ TalcMg3Si4O10(OH)2
Mgβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alβ“˜ CorundumAl2O3
Alβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Alβ“˜ KyaniteAl2(SiO4)O
Alβ“˜ MargariteCaAl2(Al2Si2O10)(OH)2
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ Corundum var. RubyAl2O3
Alβ“˜ Corundum var. SapphireAl2O3
SiSilicon
Siβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Siβ“˜ KyaniteAl2(SiO4)O
Siβ“˜ MargariteCaAl2(Al2Si2O10)(OH)2
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ TalcMg3Si4O10(OH)2
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
ClChlorine
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ MargariteCaAl2(Al2Si2O10)(OH)2
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiβ“˜ RutileTiO2
Tiβ“˜ TitaniteCaTi(SiO4)O
CrChromium
Crβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
FeIron
Feβ“˜ PyriteFeS2
ZnZinc
Znβ“˜ SphaleriteZnS

Other Regions, Features and Areas containing this locality

AsiaContinent
Asia
Eurasian PlateTectonic Plate
Nepal

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Rubies and fancy-color sapphires from Nepal
Christopher P. Smith, Edward J. Gublein, Allen M. Bassett, and Mache N. Manandhar (1997): Rubies and fancy-color sapphires from Nepal, Gems & Gemology, Spring 1997, 24-41.
Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., PΓͺcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Marble-hosted ruby deposits from Central and Southeast Asia: Towards a new genetic model. Ore Geology Reviews 34, 169-191.
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