Small (< 2m large) ultramafic intrusive complexes with zones with disseminated chromite and sulphides with a high concentration of platinum-group elements (PGE). Samples from a drill core named UM2 were mineralogically investigated by McDonald et al. (1999). The concentration of PGE was found in 3 main zones, one of them an upper dunite zone which contained Pd-rich PGM. Associated with PGMs in drill core.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

13 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Dunite

ⓘ Laterite

Detailed Mineral List:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

McDonald, I., Ohnenstetter, D., Ohnenstetter, M., Vaughan, D. J. (1999) Palladium oxides in ultramafic complexes near Lavatrafo, Western Andriamena, Madagascar. Mineralogical Magazine, 63 (3) 345-352 doi:10.1180/002646199548565

ⓘ 'Chlorite Group'

References:

ⓘ 'Chrome-Spinel (of Dana)'

References:

ⓘ Forsterite

Formula: Mg₂SiO₄

Description: Olivine with Fo84-87

References:

ⓘ Hollingworthite

Formula: (Rh,Pt,Pd)AsS

References:

ⓘ Irarsite

Formula: (Ir,Ru,Rh,Pt)AsS

References:

ⓘ Isomertieite

Formula: Pd₁₁Sb₂As₂

References:

Gervilla, F., Makovicky, E., Makovicky, M., Rose-Hansen, J. (1994) The system Pd-Ni-As at 790° and 450°C. Economic Geology, 89 (7). 1630-1639 doi:10.2113/gsecongeo.89.7.1630

ⓘ Magnesite

Formula: MgCO₃

References:

ⓘ Michenerite

Formula: PdBiTe

References:

[AmMin 85:265]

ⓘ Palladoarsenide

Formula: Pd₂As

References:

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

References:

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

References:

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

ⓘ Sperrylite

Formula: PtAs₂

References:

ⓘ Spinel

Formula: MgAl₂O₄

References:

ⓘ 'UM1999-14-O:HPd'

Formula: PdO · 3H₂O

References:

ⓘ 'UM1999-18-OH:Pd'

Formula: Pd(OH)₂ or Pd(OH)₂ · nH₂O

References:

[AmMin 85:265]

ⓘ 'Unnamed (Pd Antimonide Arsenide)'

Formula: Pd₃(Sb,As)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Isomertieite	2.AC.15a	Pd₁₁Sb₂As₂
ⓘ	Palladoarsenide	2.AC.25a	Pd₂As
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Sperrylite	2.EB.05a	PtAs₂
ⓘ	Hollingworthite	2.EB.25	(Rh,Pt,Pd)AsS
ⓘ	Irarsite	2.EB.25	(Ir,Ru,Rh,Pt)AsS
ⓘ	Michenerite	2.EB.25	PdBiTe
Group 4 - Oxides and Hydroxides
ⓘ	Spinel	4.BB.05	MgAl₂O₄
Group 5 - Nitrates and Carbonates
ⓘ	Magnesite	5.AB.05	MgCO₃
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂SiO₄
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Unnamed (Pd Antimonide Arsenide)'	-	Pd₃(Sb,As)
ⓘ	'UM1999-18-OH:Pd'	-	Pd(OH)₂ or Pd(OH)₂ · nH₂O
ⓘ	'UM1999-14-O:HPd'	-	PdO · 3H₂O
ⓘ	'Chrome-Spinel (of Dana)'	-
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ UM1999-18-OH:Pd	Pd(OH)₂ or Pd(OH)₂ · nH₂O
H	ⓘ UM1999-14-O:HPd	PdO · 3H₂O
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
C	Carbon
C	ⓘ Magnesite	MgCO₃
O	Oxygen
O	ⓘ Forsterite	Mg₂SiO₄
O	ⓘ Magnesite	MgCO₃
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ UM1999-18-OH:Pd	Pd(OH)₂ or Pd(OH)₂ · nH₂O
O	ⓘ UM1999-14-O:HPd	PdO · 3H₂O
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Mg	Magnesium
Mg	ⓘ Forsterite	Mg₂SiO₄
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Spinel	MgAl₂O₄
Al	Aluminium
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Spinel	MgAl₂O₄
Si	Silicon
Si	ⓘ Forsterite	Mg₂SiO₄
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Hollingworthite	(Rh,Pt,Pd)AsS
S	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
S	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
S	ⓘ Pyrrhotite	Fe_1-xS
K	Potassium
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Fe	ⓘ Pyrrhotite	Fe_1-xS
Ni	Nickel
Ni	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
As	Arsenic
As	ⓘ Hollingworthite	(Rh,Pt,Pd)AsS
As	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
As	ⓘ Isomertieite	Pd₁₁Sb₂As₂
As	ⓘ Palladoarsenide	Pd₂As
As	ⓘ Sperrylite	PtAs₂
As	ⓘ Unnamed (Pd Antimonide Arsenide)	Pd₃(Sb,As)
Ru	Ruthenium
Ru	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
Rh	Rhodium
Rh	ⓘ Hollingworthite	(Rh,Pt,Pd)AsS
Rh	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
Pd	Palladium
Pd	ⓘ Hollingworthite	(Rh,Pt,Pd)AsS
Pd	ⓘ Isomertieite	Pd₁₁Sb₂As₂
Pd	ⓘ Michenerite	PdBiTe
Pd	ⓘ Palladoarsenide	Pd₂As
Pd	ⓘ Unnamed (Pd Antimonide Arsenide)	Pd₃(Sb,As)
Pd	ⓘ UM1999-18-OH:Pd	Pd(OH)₂ or Pd(OH)₂ · nH₂O
Pd	ⓘ UM1999-14-O:HPd	PdO · 3H₂O
Sb	Antimony
Sb	ⓘ Isomertieite	Pd₁₁Sb₂As₂
Sb	ⓘ Unnamed (Pd Antimonide Arsenide)	Pd₃(Sb,As)
Te	Tellurium
Te	ⓘ Michenerite	PdBiTe
Ir	Iridium
Ir	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
Pt	Platinum
Pt	ⓘ Hollingworthite	(Rh,Pt,Pd)AsS
Pt	ⓘ Irarsite	(Ir,Ru,Rh,Pt)AsS
Pt	ⓘ Sperrylite	PtAs₂
Bi	Bismuth
Bi	ⓘ Michenerite	PdBiTe

Other Regions, Features and Areas containing this locality

AfricaContinent

African Plate

Antenanarivo BlockOrogenic Belt

Madagascar

Ankaratra Volcanic RangeVolcanic Range
⭔Mahajanga Province (Majunga)Province

Somali PlateTectonic Plate

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References

McDonald, I. (2008) Platinum-group element and sulphide mineralogy in ultramafic complexes at western Andriamena, Madagascar. Applied Earth Science, 117 (1) 1-10 doi:10.1179/174327508x309678

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Lavatrafo, Morafeno Commune, Maevatanana District, Betsiboka, MadagascariRegional Level TypesLavatrafoComplex Morafeno CommuneCommune Maevatanana DistrictDistrict BetsibokaRegion MadagascarCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Mineral List

Rock Types Recorded

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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

Lavatrafo, Morafeno Commune, Maevatanana District, Betsiboka, Madagascar i
Regional Level Types
Lavatrafo Complex
Morafeno Commune Commune
Maevatanana District District
Betsiboka Region
Madagascar Country