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buying boulders 24-Jun-2013 At 12:39:16 PM Snappy

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On 24/06/2013 Duang Daunk wrote:
>On 24/06/2013 Snappy wrote:
>>Unfortunately the wiki articles for other kinds of rock aren't as well
>>layed out as the granite one. However I found this: http://geology.about.com/cs/rock_typ
>sa/aarockspecgrav.htm
>>Granite: 2.6-2.7g/cm^3
>>Rhyolite: 2.4-2.6g/cm^3 (so a little lighter, but not as much as I would
>have thought).
>>Sandstone: 2.2-2.8g/cm^3
>>
>>That doesn't give a complete picture, as the porosity of the different
>>kinds of rock comes into play. My assumption (which you can feel free
>to
>>disregard, or google, if you want) is that extrusive rock such as rhyolite
>>would have a higher porosity than intrusive rock such as granite.
>>
>
>You are not saying anything a common garden variety retard couldn't read
>in your reference, as rhyolite came in 7 places below granite on that link.
>
>The only thing I read there that was half worht reading was this bit,
>"Rock density is very sensitive to the minerals that compose a particular
>rock type. Sedimentary rocks (and granite), which are rich in quartz and
>feldspar, tend to be less dense than volcanic rocks."
>
>Which by the way backs up my initial point.
>
>Meh, as I said, I'm no geo so am not going to argue the case any further
>with ignorant internet posters.

Having a bad morning eh? Not sure the reason for the hostility.

I simply stated that I thought granite was denser than other kinds of rock I commonly climb on - based on my gut feel and limited knowledge of geology (highschool level, some internet reading, talking to some actual geologists and basic reasoning skills).

I backed this up with some links stating that yes, granite is denser (which is what I originally said).

I'm not really sure what point you are arguing here, or who the "ignorant internet poster"/"garden variety retard" is....