Hard Rock Mine, Mangari, Taita-Taveta County, Kenya i
Regional Level Types
Hard Rock Mine Mine
Mangari Mining Area
Taita-Taveta County County
Kenya Country

Ruby deposit.

Two types of occurrences of the ruby-bearing rocks are recognized at HRM: (1) lenses within the contact zone between the ultrabasites and the country
rocks in the southeastern part of the body, and (2) veins cutting through the ultrabasic body.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Gemstones

Mineral List

ⓘ 'Serpentine Subgroup'

ⓘ Sillimanite

ⓘ 'Tourmaline'

6 valid minerals.

Detailed Mineral List:

ⓘ Corundum

Formula: Al₂O₃

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Corundum var. Ruby

Formula: Al₂O₃

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Graphite

Formula: C

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Hematite

Formula: Fe₂O₃

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ Sillimanite

Formula: Al₂(SiO₄)O

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

References:

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Graphite	1.CB.05a	C
Group 4 - Oxides and Hydroxides
ⓘ	Corundum	4.CB.05	Al₂O₃
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Corundum var. Ruby	4.CB.05	Al₂O₃
Group 9 - Silicates
ⓘ	Sillimanite	9.AF.05	Al₂(SiO₄)O
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
Unclassified
ⓘ	'Tourmaline'	-	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
B	Boron
B	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Graphite	C
O	Oxygen
O	ⓘ Corundum	Al₂O₃
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Corundum var. Ruby	Al₂O₃
O	ⓘ Sillimanite	Al₂(SiO₄)O
O	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Mg	Magnesium
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Corundum	Al₂O₃
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Corundum var. Ruby	Al₂O₃
Al	ⓘ Sillimanite	Al₂(SiO₄)O
Si	Silicon
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Sillimanite	Al₂(SiO₄)O
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
K	Potassium
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Fe	Iron
Fe	ⓘ Hematite	Fe₂O₃

Other Regions, Features and Areas containing this locality

AfricaContinent

East African Rift System (EARS)Zone (Tectonic)

African Plate

Tanzanian Eastern GranulitesOrogenic Belt

Kenya

⭔Coast ProvinceProvince

Somali PlateTectonic Plate

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References

Mercier, A.; Debat, P.; Saul, John M. (1999) Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14 (2). 83-104 doi:10.1016/s0169-1368(99)00002-5

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Commodity List

Mineral List

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Hard Rock Mine, Mangari, Taita-Taveta County, Kenya i
Regional Level Types
Hard Rock Mine Mine
Mangari Mining Area
Taita-Taveta County County
Kenya Country