Sredna Gora (Bulgarian: Средна гора [ˈsrɛdnɐ ɡoˈra]) is a mountain range in central Bulgaria, situated south of and parallel to the Balkan Mountains and extending from the Iskar to the west and the elbow of Tundzha north of Yambol to the east. Sredna Gora is 285 km long, reaching 50 km at its greatest width. Its highest peak is Golyam Bogdan at 1,604 m (ca. 5,262 ft).

The mountain range is divided into three parts by the rivers Topolnitsa and Stryama — a western (Ihtimanska Sredna Gora), a central (Sashtinska Sredna Gora) and an eastern part (Sarnena Gora).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Uranium

Mineral List

Mineral list contains entries from the region specified including sub-localities

18 valid minerals.

Rock Types Recorded

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ 'Pegmatite'

Detailed Mineral List:

ⓘ Actinolite

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Albite

Formula: Na(AlSi₃O₈)

Locality: Unnamed pegmatite, Bulgaria

References:

Zidarov, N., & Petrov, O. (2011) Grayite from Sredna Gora Pegmatites - First Find in Bulgaria. Comptes Rendus De L Academie Bulgare Des Sciences, 64(12), 1719-1726.

ⓘ Andalusite

Formula: Al₂(SiO₄)O

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

Locality: Unnamed pegmatite, Bulgaria

References:

Zidarov, N., & Petrov, O. (2011) Grayite from Sredna Gora Pegmatites - First Find in Bulgaria. Comptes Rendus De L Academie Bulgare Des Sciences, 64(12), 1719-1726.

ⓘ 'Chlorite Group'

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Clinozoisite

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Corundum

Formula: Al₂O₃

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Dravite

Formula: NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ 'Dravite-Schorl Series'

Locality: Ihtiman, Ihtiman Municipality, Sofia Province, Bulgaria

References:

Vasil Arnaudov, Svetoslav Petrusenko, and Chavdar Karov (2003): Sherl, foytit i dravit v pegmatiti ot metamorfnata mantiya na Planskiya pluton, Yugozapadna B'lgariya [Schorl, foitite and dravite from pegmatites in the metamorphic zone of Plana Pluton, SW Bulgaria]. Geokhimiya, Mineralogiya i Petrologiya, 40, 97-107 (in Bulgarian with English abtract). [http://www.geology.bas.bg/mineralogy/gmp_files/gmp40/V.Arnaudov.pdf]

ⓘ Graphite

Formula: C

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Grayite

Formula: (Th,Pb,Ca)(PO₄) · H₂O

Locality: Unnamed pegmatite, Bulgaria

References:

Zidarov, N., & Petrov, O. (2011) Grayite from Sredna Gora Pegmatites - First Find in Bulgaria. Comptes Rendus De L Academie Bulgare Des Sciences, 64(12), 1719-1726.

ⓘ Microcline

Formula: K(AlSi₃O₈)

Locality: Unnamed pegmatite, Bulgaria

References:

Zidarov, N., & Petrov, O. (2011) Grayite from Sredna Gora Pegmatites - First Find in Bulgaria. Comptes Rendus De L Academie Bulgare Des Sciences, 64(12), 1719-1726.

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Quartz

Formula: SiO₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Schorl

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Vermiculite

Formula: Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

ⓘ Zoisite

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

Locality: Pegmatite occurrences, Bulgaria

References:

Petrusenko, S. & Arnaudov, V. (1996): Desilicified pegmatites with dravite and corundum from the Ikhtiman Sredna Gora, Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 31, 65-77 (in Bulgarian).

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Graphite	1.CB.05a	C
Group 4 - Oxides and Hydroxides
ⓘ	Corundum	4.CB.05	Al₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Grayite	8.CJ.45	(Th,Pb,Ca)(PO₄) · H₂O
Group 9 - Silicates
ⓘ	Andalusite	9.AF.10	Al₂(SiO₄)O
ⓘ	Clinozoisite	9.BG.05a	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
ⓘ	Zoisite	9.BG.10	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
ⓘ	Beryl	9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ	Dravite	9.CK.05	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Schorl	9.CK.05	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Vermiculite	9.EC.50	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Dravite-Schorl Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
H	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
H	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
H	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
H	ⓘ Dravite-Schorl Series
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Be	Beryllium
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
B	Boron
B	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Dravite-Schorl Series
C	Carbon
C	ⓘ Graphite	C
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Andalusite	Al₂(SiO₄)O
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
O	ⓘ Corundum	Al₂O₃
O	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
O	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
O	ⓘ Dravite-Schorl Series
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Dravite-Schorl Series
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Mg	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Mg	ⓘ Dravite-Schorl Series
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Andalusite	Al₂(SiO₄)O
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Corundum	Al₂O₃
Al	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Al	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Dravite-Schorl Series
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Andalusite	Al₂(SiO₄)O
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Si	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Dravite-Schorl Series
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
P	Phosphorus
P	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O
K	Potassium
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ca	ⓘ Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Fe	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Fe	ⓘ Dravite-Schorl Series
Pb	Lead
Pb	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O
Th	Thorium
Th	ⓘ Grayite	(Th,Pb,Ca)(PO₄) · H₂O

Fossils

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Localities in this Region

Bulgaria

Pegmatite occurrences
Sofia Province
- ⭔Ihtiman Municipality
  - ⭔Ihtiman
- Kostenets Municipality
  - White Water Mine
Unnamed pegmatite

Other Regions, Features and Areas that Intersect

Bulgaria

Sredna GoraMountain Range

Eurasian PlateTectonic Plate

Carpathian MountainsVolcanic Arc

EuropeContinent

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

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Ihtimanska Sredna Gora (Ikhtiman Sredna Gora), Bulgaria i
Regional Level Types
Ihtimanska Sredna Gora (Ikhtiman Sredna Gora) Mountain Range
Bulgaria Country