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Soafia thorianite deposit, Maromby, Amboasary Sud District, Anosy, Madagascari
Regional Level Types
Soafia thorianite depositDeposit
MarombyCommune
Amboasary Sud DistrictDistrict
AnosyRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
24° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~26km
Type:
Köppen climate type:
Mindat Locality ID:
134725
Long-form identifier:
mindat:1:2:134725:1
GUID (UUID V4):
bc730dd0-c645-4c43-9178-d64b1078f3ca
Other/historical names associated with this locality:
Sofia
Other Languages:
Malagasy:
Soafia, Kaominin'i Maromby, Distrikan' Amboasary Atsimo, Faritr' Anosy, Madagasikara


An uranothorianite and phlogopite deposit located NE of Andranondambo. The Hibon brothers found here a mineral that was analyzed by H. Besairie in 1947 to be thorianite. This was the first find of thorianite together with phlogopite in this area (Amboasary District (= l'Androy Mandraréen)).
"Sofia" is a misnomer that appears once in H. Besairie (1966), p. 391, but it is spelled correctly on p. 398.

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.


Mineral List


2 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

Detailed Mineral List:

Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Thorianite
Formula: ThO2
Colour: black
Description: The Hibon brothers found one group of 2 intergrown crystals > 2 cm large

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Thorianite4.DL.05ThO2
Group 9 - Silicates
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
OOxygen
O PhlogopiteKMg3(AlSi3O10)(OH)2
O ThorianiteThO2
MgMagnesium
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si PhlogopiteKMg3(AlSi3O10)(OH)2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
ThThorium
Th ThorianiteThO2

Geochronology

Mineralization age: Paleozoic : 534 ± 30 Ma to 480 ± 20 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Ordovician
   Early/Lower Ordovician
ⓘ Thorianite480 ± 20 Ma
    
   
  Cambrian
   Terreneuvian
ⓘ Phlogopite534 ± 30 Ma

Other Regions, Features and Areas containing this locality

Madagascar
Somali PlateTectonic Plate

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

 
Mineral and/or Locality  
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