IntroductionOur

pavings are quarried in our own delphs. In our Ezüsthegy Delph

quartz-sandstone, in our Budakalászi Delph limestone and in our Üröm

Delph calcaerous marls are quarried. All three mine pits are our own

properties. The whole production process is carried out int he

delphs, from the first steps to the finishing touches.





Üröm

DelphCalcaerous

mud and clay mud used to be formed int he sea at the same time due to

the special climatic circumstances. This process created the so

called Buda Marl. When this rock gets moisture it turns to be an

aquitard, however it is advisable to impregnate against wogs and due

to easier cleaning. The colour of the rock is determinated by the

ratio of two and three valance iron elements.





Ezüsthegy

DelphThe

Ezüsthegy sandstone was formed  in a sea environment in the

Oligocene. It has a rusty, silvery, somewhere white into dark

yellowish colour. It is built up from small pebbles alone. Int he old

times millstones and whetstones were produced from this sandstone.

Its’ processing is still made by hand: it is still split and carved

by hand. Due to its high quartz content the mechanized processing of

this rock is very costly. Plinths of churches, villas, mansions,

several femces and buttresses and later whole public facilities,

facades and institute buildings were built from this stone. The

buildings recently built from the quartz-sandstone evoke the

historical times.





Budakalász

DelphThe

limestone was formed in a relatively long and narrow freshwater lake

during the Pleistocene ice age. From the relatively high pressure

waters of the lukewarm springs effusing to the surface calcium

carbonate precipitated due to the loss of pressure. A rich

vegeatation occured in these waters. The plants extracted the rest of

the CO2 from

the waters. The calcium-carbonate precipitated ont he brenches and

leaves of the plants, but this exterminated the vegetation int he

lake. The soft parts of the plants decayed and the space left after

the plants are very typical int he fresh water limestones (also

called traverintes). Its’ colour can be white, yellow, brown and

red.