Iskra (Bulgarian: Искра) is a village in southern Bulgaria, the southernmost village in the Parvomay Municipality, Plovdiv Province. It has the largest population outside the town of Parvomay in the municipality. It is 22 km to the south of Parvomay town, 8 km to the north of the village Novakovo, 7 km to the east of the village Lenovo and 8 km to the south of the village Bryagovo.

Zeolites (laumontite, heulandite and first confirmed occurrence of harmotome in Bulgaria) north of Iskra from fissures of latitic lavas.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Harmotome

ⓘ 'Heulandite Subgroup'

ⓘ Laumontite

2 valid minerals.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

ⓘ Latite

Detailed Mineral List:

ⓘ Harmotome

Formula: Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O

References:

159-174

Kostov I. (1962) The Zeolites in Bulgaria. Analcime, chabasite, harmotome. The Annual of Sofia University. Faculty of Biology, Geology and Geography. Livre 2, Geology 55

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

References:

159-174

Kostov I. (1962) The Zeolites in Bulgaria. Analcime, chabasite, harmotome. The Annual of Sofia University. Faculty of Biology, Geology and Geography. Livre 2, Geology 55

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

159-174

Kostov I. (1962) The Zeolites in Bulgaria. Analcime, chabasite, harmotome. The Annual of Sofia University. Faculty of Biology, Geology and Geography. Livre 2, Geology 55

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Harmotome	9.GC.10	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Unclassified
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	Oxygen
O	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Na	Sodium
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	Aluminium
Al	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	Silicon
Si	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
K	Potassium
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	Calcium
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ba	Barium
Ba	ⓘ Harmotome	Ba₂(Si₁₂Al₄)O₃₂ · 12H₂O

Fossils

There are 1 fossil locality from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

Youngest Fossil Listed

33.9 Ma (Oligocene)

Oldest Fossil Listed

38.0 Ma (Eocene)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Acar genus	Animalia : Mollusca : Bivalvia : Arcida : Arcidae : *Acar*	38 - 33.9 Ma Paleogene
Chama genus	Animalia : Mollusca : Bivalvia : Venerida : Chamidae : *Chama*	38 - 33.9 Ma Paleogene

Fossil Localities

Click to show 1 fossil locality

Bulgaria

Plovdiv Province
- Paleogene🐚 Popovo

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Iskra,_Plovdiv_Province
Wikidata ID:	Q4203902

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

Kostov, I. (1962) The Zeolites in Bulgaria. Analcime, chabasite, harmotome. The Annual of Sofia University. Faculty of Biology, Geology and Geography. Book 2, Geology: 55: 159-174.

Atanassova, R., Vassileva, R.D., Kadiyski, M., Zlatev, Z. (2012) Crystallographic, chemical and structural characteristics of harmotome from Zlatolist, Eastern Rhodopes, Bulgaria. Bulgarian Chemical Communications: 44 (Proceedings of the IIIrd National Crystallographic Symposium): 7-16 (page 8). http://www.bcc.bas.bg/bcc_volumes/Volume_44_Special_2012/Volume_44_Special_2012_PDF/BCC-44-Special_Issue-1.pdf

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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

Fossils

Other Databases

References

Iskra, Parvomay Municipality, Plovdiv Province, Bulgaria i
Regional Level Types
Iskra Village
Parvomay Municipality Municipality
Plovdiv Province Oblast
Bulgaria Country