Igneous rock
Building with Scottish Stone, published by the Natural Stone Institute and the Scottish Executive in 2005, defines igneous rocks as: ‘Fine to coarse-grained crystalline rocks originating from the molten state. Basic or intermediate igneous rocks such as basalt, dolerite or gabbro are generally dark or grey in colour and contain little or no quartz. Pale or strongly coloured varieties such as felsite and porphyry are generally associated with volcanic areas. The colloquial term 'whinstone' is commonly used to describe igneous rocks other than granite, although this name is commonly applied to any dark hard rock, such as the sedimentary greywacke sandstone of southern Scotland.’
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Download your free guide.
Four new types of prior approval for solar developments
Online Planning Portal application types from 5 September.
Election fails to spark construction industry revival
Contract awards and planning; post election.
Making diversity and inclusion easy for SMEs
The CIOB tool for companies with limited resources.
Sustainable Futures: Redefining Retrofit for Net Zero Living
BSRIA Briefing 2024, initial speakers announced.
Looking back at the UK's first Passivhaus leisure centre
Reflections on St Sidwell’s Point with CIAT.
A-Level results and electrical apprenticeships
Electrical Skills Index highlights areas with skills shortages.
One of the world's more unusual drive-throughs.
A quick introduction.
Hadrian's Wall Path and the national trails
The trails are heritage assets in their own right.
Articles on timely advice and hydraulic lime.
Building Designers Association of Australia
CIAT and BDAA sign Memorandum of Understanding.
Built Environment Inclusive partners issue statement committed to inclusion.
Building regulation requirements can have unintended consequences.
CIOB announces 2024/25 vice president
Sustainability champion Professor Saul Humphrey.
Accelerating towards a net-zero built environment.