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Assal Lake, Djiboutii
Regional Level Types
Assal LakeLake
DjiboutiCountry

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Name(s) in local language(s):Lac Assal
Latitude & Longitude (WGS84): 11° 38' 51'' North , 42° 25' 49'' East
Latitude & Longitude (decimal): 11.64769,42.43044
GeoHash:G#: sfn4m82ut
Locality type:Lake
Köppen climate type:BWh : Hot deserts climate


Lake Assal lies at the bottom of a depression surrounded by mountains.Its level is at 155 meters below sea level.It is fed by springs very salty, by the sea water that seeps through cracks from the sea near.The rate of salinity is 370 grams of salt per litre of water.
On the west coast the surf rounds halite crystals to round pebbles.

Refs.:
- CHAMPREUX, François (1978): Les cristaux de gypse et de halite du lac Assal (RDD). Minéraux et fossiles, n° 37, 40-48.
- Aufschluss 59 (2008), 29-31.

Regions containing this locality

Somalia Plate

Plate - 1,505 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Gypsum
Formula: CaSO4 · 2H2O
Reference: CHAMPREUX ( François ), Les cristaux de gypse et de halite du lac Assal ( RDD ), Minéraux et fossiles, n° 37, pp. 40-48, 1978 . { BN : 8° Jo 19249 }
Halite
Formula: NaCl
Reference: CHAMPREUX, François (1978): Les cristaux de gypse et de halite du lac Assal (RDD). Minéraux et fossiles, n° 37, 40-48.

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
'Halite'3.AA.20NaCl
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Gypsum'7.CD.40CaSO4 · 2H2O

List of minerals arranged by Dana 8th Edition classification

Group 9 - NORMAL HALIDES
AX
Halite9.1.1.1NaCl
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
OOxygen
O GypsumCaSO4 · 2H2O
NaSodium
Na HaliteNaCl
SSulfur
S GypsumCaSO4 · 2H2O
ClChlorine
Cl HaliteNaCl
CaCalcium
Ca GypsumCaSO4 · 2H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cenozoic
0 - 66 Ma



ID: 3188574
Cenozoic volcanic rocks

Age: Cenozoic (0 - 66 Ma)

Stratigraphic Name: Ethiopian Flood Basalt

Lithology: Flood basalt(s); mafic-intermediate volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Quaternary
0 - 2.588 Ma



ID: 3306696

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Volcanic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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