What I am looking for is some regional definition for some cities in a fantasy setting I am currently hammering into shape.
My base city for the setting has brick yards out side of its walls, where they raised the battalions of infantry and the starting seeds for republicanism came about The sign of four bricks is the ministerial sigil that looks after bricks, the building industry, and the army. Since the region is known to have iron bearing sands, so I am mooting Red Brick for the city, but I would like to have black, as black would suit the religious iconography I have got up and running. ... I could handwave a bit and say its manganese oxide and call the bricks black even though they are actually dark brown? That also allows the Damascus steel from the uplands tribes I wanted... [Green Brick is for the Lakeland towns where good brasses are made, and copper and tin mines abound] ...so Ta Sue :) McE > -----Original Message----- > From: [email protected] [mailto:gurpsnet-l- > [email protected]] On Behalf Of Susan Koziel > Sent: 02 November 2010 16:46 > To: The GURPSnet mailing list > Subject: Re: [gurps] A question about Bricks > > Not brick making but pottery/glazing... which has some of the same colour > effects (depending on if the bricks are fired under oxidizing or reducing > conditions... the colours I'm listing are for oxidizing conditions. I am > not sure of reducing condition colours - I do not do enough reduction > firings to know what colours the various oxides give. > > Cobat oxide - blue > Iron oxide - red > Copper oxide - green > Manganese oxide - brown > > Granted these colours are based on the fact that the clay body you are > using for the bricks is white or grey and not black or red. > Red and some of the black clays fire to a red colour so mixing oxides with > them just tends to give muddy versions of the colour of the oxides. > > Different combinations of minerals will give you different colours due to > chemical reactions... so it doesn't work like a painting where you can mix > colours - sure you can mix the colours but blue (cobalt) and red (iron) do > not give purple... it acutally gives a sort of goldish colour or a muddy > brown - depending on proportions of the mix. > > Often time the colour of bricks has to do with the local clay they made > the brick from - typically brick is made from the cheapest local clay > deposit. So the colour is more a consequence of which of the brick works > you get the brick from. > > The exception to this is the brick that is made into high temperature > brick - where they take high quality clays and have specific recipes that > allow the brick to survive high temps or exotic chemical conditions. > Fire brick is pretty much a uniform yellow/beige colour. > > -Sue > > --- On Tue, 11/2/10, nigel mccarty-eigenmann <[email protected]> > wrote: > > > From: nigel mccarty-eigenmann <[email protected]> > > Subject: [gurps] A question about Bricks > > To: "Gurps" <[email protected]> > > Received: Tuesday, November 2, 2010, 6:22 AM > > Dear Groupmind, > > > > Anyone know about brickmaking? > > > > What mineral contents would make a brick come out of the > > oven blue, green > > and black? > > > > > > McE > > > > > > _______________________________________________ > > GurpsNet-L mailing list <[email protected]> > > http://mail.sjgames.com/mailman/listinfo/gurpsnet-l > > > _______________________________________________ > GurpsNet-L mailing list <[email protected]> > http://mail.sjgames.com/mailman/listinfo/gurpsnet-l _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
