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Peridotite xenoliths, Olmani Cinder Cone (Olmani Hill), Kilimanjaro Region, Tanzaniai
Regional Level Types
Peridotite xenoliths- not defined -
Olmani Cinder Cone (Olmani Hill)- not defined -
Kilimanjaro RegionRegion
TanzaniaCountry

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Key
Lock Map
Latitude & Longitude:
3° South , 37° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~118km


Wehrlite, harzburgite and dunite xenoliths in ankaramite.
Interaction of ultrarefractory peridotite with magnesian carbonatite melts.
Located 10 kilometers East of Arusha.
Usagaran Province, Gregory Rift Valley.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Chromite
Formula: Fe2+Cr3+2O4
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
'Clinopyroxene Subgroup'
Description: In wehrlite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Diopside
Formula: CaMgSi2O6
Description: In harzburgite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Diopside var: Chromian Diopside
Formula: Ca(Mg,Cr)Si2O6
Description: Low Al.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Enstatite
Formula: MgSiO3
Description: In harzburgite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Fluorapatite
Formula: Ca5(PO4)3F
Description: In wehrlite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Forsterite
Formula: Mg2SiO4
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
'Glass'
Description: P-rich glass.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Monazite-(La)
Formula: La(PO4)
Description: 10 wt% ThO2, 25 wt% LaO. Inclusions in forsterite. In harzburgite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
Spinel
Formula: MgAl2O4
Description: In harzburgite.
Reference: R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Spinel4.BB.05MgAl2O4
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Monazite-(La)8.AD.50La(PO4)
Group 9 - Silicates
Diopside9.DA.15CaMgSi2O6
var: Chromian Diopside9.DA.15Ca(Mg,Cr)Si2O6
Enstatite9.DA.05MgSiO3
Forsterite9.AC.05Mg2SiO4
Unclassified Minerals, Rocks, etc.
'Clinopyroxene Subgroup'-
'Glass'-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Spinel7.2.1.1MgAl2O4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(La)38.4.3.2La(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Enstatite65.1.2.1MgSiO3
Unclassified Minerals, Mixtures, etc.
'Clinopyroxene Subgroup'-
Diopside
var: Chromian Diopside
-Ca(Mg,Cr)Si2O6
'Glass'-

List of minerals for each chemical element

OOxygen
O ForsteriteMg2SiO4
O FluorapatiteCa5(PO4)3F
O Monazite-(La)La(PO4)
O EnstatiteMgSiO3
O DiopsideCaMgSi2O6
O SpinelMgAl2O4
O ChromiteFe2+Cr23+O4
O Diopside (var: Chromian Diopside)Ca(Mg,Cr)Si2O6
FFluorine
F FluorapatiteCa5(PO4)3F
MgMagnesium
Mg ForsteriteMg2SiO4
Mg EnstatiteMgSiO3
Mg DiopsideCaMgSi2O6
Mg SpinelMgAl2O4
Mg Diopside (var: Chromian Diopside)Ca(Mg,Cr)Si2O6
AlAluminium
Al SpinelMgAl2O4
SiSilicon
Si ForsteriteMg2SiO4
Si EnstatiteMgSiO3
Si DiopsideCaMgSi2O6
Si Diopside (var: Chromian Diopside)Ca(Mg,Cr)Si2O6
PPhosphorus
P FluorapatiteCa5(PO4)3F
P Monazite-(La)La(PO4)
CaCalcium
Ca FluorapatiteCa5(PO4)3F
Ca DiopsideCaMgSi2O6
Ca Diopside (var: Chromian Diopside)Ca(Mg,Cr)Si2O6
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Diopside (var: Chromian Diopside)Ca(Mg,Cr)Si2O6
FeIron
Fe ChromiteFe2+Cr23+O4
LaLanthanum
La Monazite-(La)La(PO4)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
R.L. Rudnick et al., Earth and Planetary Science Letters, 114, 1993, pp. 463-475.


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