The Balgarovo Quarry is located 2.5 km north of the town of Balgarovo and 1.5 km from the "Malka poyana" busstop. The quarry is about 25 km from the town of Burgas, with both a road and railway connection to town. The quarry is also about 5 km north of the Lukoil Neftochim AD, and the town of Kameno. Administratively it belongs to the land of the town of Balgarovo, which is the nearest location.
In terms of territory it is situated in the Northwest Burgas lowlands.
The location forms part of the hills belonging to the Little Aytos Mountain - Eastern Srednogorie.
The deposit is associated with a hilly terrain bordered on the east by the river Aytos valley separating the town of Balgarovo form the site.
The dome-like shape is made up of two successive eruptions of andesite lava in the Senonian period. The upper part is occupied by beige-brown andesites and is the product of the first eruption. Lying underneath are andesite tuff-breccias, the product of the second eruption; these are highly weathered, of a greenish colour, and are known as volcanic glass / 40% of the total mass/.
As a result of prospecting works on the deposit reserves were approved through Protocol No.3 / 15.04.1961.
These rocks are suitable raw material for crushed fractions for road construction, railway construction, asphalt coatings, aggregates for concrete and boulders for bank protection measures.
In terms of mineral composition, structure and texture bulgarites stand closest to trachytes.
Dr. Ivan Borisov, PhD, differentiates them from trachytes under the name of "Bulgarites". Bulgarites predominate in the deposit over volcanic glass mixed with andesite tuff. In terms of structure Bulgarites are divided into two types: fine-grained, almost aphyry type, and coarse-grained porphyry type, with a gradual transition between them.
Massive texture; colour – rusty-reddish to beige.
Structure – fine porphyry type with microlithic mass characteristic of effusive rocks where microliths form sheaf-type and radial-ray-type aggregates. The mineral composition includes plagioclase, potassium feldspar, ore mineral and apatite.
Volcanic glass cuts through the entire effusion of bulgarites. It is mixed with andesite tuff and individual pieces of bulgarites. It is highly weathered, clayey with white spherulites at places. In colour is dark green to grass green, and olive green at less weathered places. Volcanic glass is very fragile and brittle, with conchoidal fractures, and also uneven in some cases. This allows volcanic glass to change into the fine classes even at the first stage of crushing and be separated from other rocks.

Information on the Concession:

Balgarovo-South Area

Balgarovo-North Area