Jurassic bauxite (J31,2) from Logatec deposited between the Lower Kimmeridgian (Oxfordian) and Upper Kimmeridgian beds. The J31,2 bauxite profile at Logatec, exposed by the highway section, has a lenticular shape and a thickness of 0.8 m. It formed at the contact between Lower Kimmeridgian (Oxfordian?) open marine massive oolitic limestone (in the footwall) and Upper Kimmeridgian inner platform (lagoon) well-bedded micritic limestone (in the hanging wall). The bauxite profile has a highly heterogeneous structure and texture, ranging from highly weathered purple-reddish oolitic bauxite to yellowish-orange bauxite that is partially weathered into soft orange clay, especially near the contact with the overlying carbonate rocks, and is partially intercalated with hard, silicified bauxite of violet colour. A limestone lens is also present within the bauxite horizon, 0.6 m above the footwall.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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

ⓘ Bauxite (Aluminium)

Mineral List

16 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Anatase

Formula: TiO₂

References:

Mencinger, Lara; Miler, Miloš; Ivančič, Kristina; Teran, Klemen; Zupančič, Nina (2026) Characterisation of selected bauxite profiles in Slovenia with emphasis on REE distribution. Ore Geology Reviews, 197. p.107523. doi:10.1016/j.oregeorev.2026.107523

ⓘ Böhmite

Formula: AlO(OH)

References:

ⓘ 'Calcioancylite'

References:

ⓘ Calcite

Formula: CaCO₃

References:

ⓘ Cerianite-(Ce)

Formula: Ce⁴⁺O₂

References:

ⓘ Clinochlore

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

References:

ⓘ Diaspore

Formula: AlO(OH)

References:

ⓘ 'Florencite'

References:

ⓘ Goethite

Formula: Fe³⁺O(OH)

References:

ⓘ Goyazite

Formula: SrAl₃(PO₄)(PO₃OH)(OH)₆

References:

ⓘ Hematite

Formula: Fe₂O₃

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ Kaolinite

Formula: Al₂(Si₂O₅)(OH)₄

References:

ⓘ 'Lanthanite'

Formula: REE³⁺₂(CO₃)₃ · 8H₂O

References:

ⓘ Lepidocrocite

Formula: Fe³⁺O(OH)

References:

ⓘ 'Micrite'

References:

ⓘ 'Monazite Group'

Formula: REE(PO₄)

References:

ⓘ Pseudobrookite

Formula: Fe³⁺₂Ti⁴⁺O₅

References:

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Quartz var. Chalcedony

Formula: SiO₂

References:

ⓘ Rutile

Formula: TiO₂

References:

ⓘ 'Xenotime'

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz var. Chalcedony	4.00.05	SiO₂
ⓘ		4.00.05	SiO₂
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Pseudobrookite	4.CB.15	Fe³⁺₂Ti⁴⁺O₅
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	Anatase	4.DD.05	TiO₂
ⓘ	Cerianite-(Ce)	4.DL.05	Ce⁴⁺O₂
ⓘ	Diaspore	4.FD.10	AlO(OH)
ⓘ	Goethite	4.FD.10	Fe³⁺O(OH)
ⓘ	Böhmite	4.FE.15	AlO(OH)
ⓘ	Lepidocrocite	4.FE.15	Fe³⁺O(OH)
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Goyazite	8.BL.10	SrAl₃(PO₄)(PO₃OH)(OH)₆
Group 9 - Silicates
ⓘ	Clinochlore	9.EC.55	Mg₅Al(AlSi₃O₁₀)(OH)₈
ⓘ	Kaolinite	9.ED.05	Al₂(Si₂O₅)(OH)₄
Unclassified
ⓘ	'Monazite Group'	-	REE(PO₄)
ⓘ	'Xenotime'	-
ⓘ	'Calcioancylite'	-
ⓘ	'Florencite'	-
ⓘ	'Lanthanite'	-	REE³⁺₂(CO₃)₃ · 8H₂O
ⓘ	'Micrite'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Böhmite	AlO(OH)
H	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
H	ⓘ Diaspore	AlO(OH)
H	ⓘ Goethite	Fe³⁺O(OH)
H	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
H	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
H	ⓘ Lepidocrocite	Fe³⁺O(OH)
H	ⓘ Lanthanite	REE₂³⁺(CO₃)₃ · 8H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Lanthanite	REE₂³⁺(CO₃)₃ · 8H₂O
O	Oxygen
O	ⓘ Anatase	TiO₂
O	ⓘ Böhmite	AlO(OH)
O	ⓘ Calcite	CaCO₃
O	ⓘ Cerianite-(Ce)	Ce⁴⁺O₂
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
O	ⓘ Diaspore	AlO(OH)
O	ⓘ Goethite	Fe³⁺O(OH)
O	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
O	ⓘ Lepidocrocite	Fe³⁺O(OH)
O	ⓘ Monazite Group	REE(PO₄)
O	ⓘ Pseudobrookite	Fe₂³⁺Ti⁴⁺O₅
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Lanthanite	REE₂³⁺(CO₃)₃ · 8H₂O
Mg	Magnesium
Mg	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	Aluminium
Al	ⓘ Böhmite	AlO(OH)
Al	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	ⓘ Diaspore	AlO(OH)
Al	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
Al	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	Silicon
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Si	ⓘ Kaolinite	Al₂(Si₂O₅)(OH)₄
Si	ⓘ Quartz	SiO₂
P	Phosphorus
P	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
P	ⓘ Monazite Group	REE(PO₄)
S	Sulfur
S	ⓘ Pyrite	FeS₂
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ti	Titanium
Ti	ⓘ Anatase	TiO₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Pseudobrookite	Fe₂³⁺Ti⁴⁺O₅
Ti	ⓘ Rutile	TiO₂
Fe	Iron
Fe	ⓘ Goethite	Fe³⁺O(OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Lepidocrocite	Fe³⁺O(OH)
Fe	ⓘ Pseudobrookite	Fe₂³⁺Ti⁴⁺O₅
Fe	ⓘ Pyrite	FeS₂
Sr	Strontium
Sr	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
Ce	Cerium
Ce	ⓘ Cerianite-(Ce)	Ce⁴⁺O₂

Other Regions, Features and Areas containing this locality

Croatia

Dinaric AlpsMountain Range

Eurasian PlateTectonic Plate

DinaridesAccretionary Complex

EuropeContinent

Slovenia

⭔Littoral–Inner Carniola Statistical RegionStatistical Region

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References

[1]Mencinger, Lara; Miler, Miloš; Ivančič, Kristina; Teran, Klemen; Zupančič, Nina (2026) Characterisation of selected bauxite profiles in Slovenia with emphasis on REE distribution. Ore Geology Reviews, 197. p.107523. doi:10.1016/j.oregeorev.2026.107523

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Logatec bauxite deposit, Postojna, SloveniaiRegional Level TypesLogatec bauxite depositDeposit PostojnaMunicipality SloveniaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Commodity List

Mineral List

Rock Types Recorded

Select Rock List Type

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

Logatec bauxite deposit, Postojna, Slovenia i
Regional Level Types
Logatec bauxite deposit Deposit
Postojna Municipality
Slovenia Country