Site hosted by Angelfire.com: Build your free website today!

Rocks In My Head

Blog Tools
Edit your Blog
Build a Blog
RSS Feed
View Profile
« April 2013 »
S M T W T F S
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30
Entries by Topic
All topics  «
geology et al
some days are pretty good
My own link
Rock Shop
You are not logged in. Log in
03/12/13
Erratics

My reading in the subject area of rocks, minerals, and gems has been, for nearly a year, in the area of birthstones.  It's a subject that says a lot about human history.  But to my way of thinking is somewhat less interesting than geology.  So I have gone back to studying the book Minnesota's Geology by Richard W. Ojakangas and Charles L. Matsch.  The subject is glaciation.  Many terms describe what was left behind when glaciers moved across Minnesota during the Quaternary (2 million years ago to the present).  One interesting term is erratics.  These stones can be any size from a boulder to a pebble.  They were transported from one area to another by the movement of glaciers.  They differ from the local bedrock in color and composition, sometimes so radically they have been mistaken for meteors.  I take an interest in these because the glaciers dragged in so much material to this local area.  Also, I who am not a seasoned artist sold a painting of Finnish erratics to an employee of the Guggenheim, which was a thrill and honor.  Since then I've read about erratics at length.  Technically, if a rock was moved due to human activity, it's an erratic.  By that definition, rockhounds have created a lot of these!

 


Posted by oh5/ojhoff at 11:51 AM CDT
Post Comment | Permalink | Share This Post
02/18/13

 


 

 

 

Topaz Prayer


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 3:31 PM CST
Updated: 02/18/13 3:33 PM CST
Post Comment | Permalink | Share This Post

 


 

 

 

Tourmaline in a Tailspin


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 3:26 PM CST
Updated: 02/18/13 3:27 PM CST
Post Comment | View Comments (1) | Permalink | Share This Post
01/27/13
opal


 

 

Grandpa’s Opal


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 2:44 PM CST
Updated: 02/17/13 5:43 PM CST
Post Comment | Permalink | Share This Post
01/22/13

 

 


 

 

Lapis Lazuli


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:32 PM CST
Updated: 02/17/13 5:42 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

 

Sapphire Blues


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:29 PM CST
Updated: 02/17/13 5:41 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

  

Sardonyx


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:25 PM CST
Updated: 02/17/13 5:18 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

 

Peridot


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:21 PM CST
Updated: 02/17/13 5:16 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

Carnelian


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:17 PM CST
Updated: 02/17/13 5:15 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

Ruby


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 7:02 PM CST
Updated: 02/17/13 5:14 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

 

Benedicta’s Moonstone


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 6:55 PM CST
Updated: 02/17/13 5:12 PM CST
Post Comment | Permalink | Share This Post

 

 


 

 

Pearl


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 6:43 PM CST
Updated: 02/17/13 5:10 PM CST
Post Comment | Permalink | Share This Post

 

 

Alexandrite

 


 

 


 

www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 4:21 PM CST
Updated: 02/17/13 5:05 PM CST
Post Comment | Permalink | Share This Post
12/29/12


 


 

Chrysoprase


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 4:58 PM CST
Updated: 12/29/12 5:00 PM CST
Post Comment | Permalink | Share This Post
12/05/12


 

Emerald


www.oliviahoff.com 

 


 

 


Posted by oh5/ojhoff at 10:11 AM CST
Updated: 12/05/12 10:13 AM CST
Post Comment | Permalink | Share This Post
11/23/12
Life in Helga Township

 These pics show citizens' reactions to the ruling (and a lawsuit) that says you can't sell rocks off your property in Helga Township (Hubbard County, MN).  My own reaction was to post a Genuine Helga Township Field Rock For Sale notice on my Facebook.


Posted by oh5/ojhoff at 12:54 PM CST
Post Comment | Permalink | Share This Post
10/14/12
Quartz Crystal

Quartz Crystal


www.oliviahoff.com 

 

 


 


Video I made about rock crystal (semi-steampunk). 


Posted by oh5/ojhoff at 2:12 PM CDT
Updated: 02/17/13 4:30 PM CST
Post Comment | Permalink | Share This Post
09/20/12

 

 

According to the book I have resumed reading, Minnesota Geology, the Cenozoic was the era when Minnesota began  to achieve its status as the “icebox  of the nation”.   The Rocky Mountains had formed, changing the climate.  Dinosaurs had disappeared and small mammals predominated.  Remains are found in the Badlands of South Dakota which  unfortunately are not found  in Minnesota.  Glacial drift covers evidence of activity.   Of course, subsurface exploration may one day reveal some of the specifics.

 

 

www.oliviahoff.com 

 

 


Posted by oh5/ojhoff at 2:15 PM CDT
Updated: 09/20/12 2:21 PM CDT
Post Comment | Permalink | Share This Post
08/15/12
Summertime

 I haven't done much with my rock business this summer.  I was flea-bitten (or something) and I didn't print up new business cards as planned, or place ads in the local shopper.  I did, however, sell a couple of articles on birthstones and I made a handful of infomercials in the virtual world called SecondLife.  Those were fun to do!  I also acquired inventory through purchase and trade.  I chose stones with an eye to jewelry making next winter.  And the trade was great!  Also, I now market Thunder Bay amethyst.

 

www.oliviahoff.com 

 

 


Posted by oh5/ojhoff at 4:53 PM CDT
Updated: 08/15/12 5:03 PM CDT
Post Comment | Permalink | Share This Post
06/14/12
things not to say to the sole proprietor of a rock shop

 

Some day, when I have time, I’m going to take up a fun hobby like this.  Maybe after I retire.

Allow me to throw a bucket of cold water on your  life too.

 

Do you polish your own rocks or do you just buy and resell?

I have all the equipment to do the processes  but there wouldn’t be enough hours in a day to create this much inventory.  Not that it’s any of your  business.

 

Do you find all of these rocks around here?

Sure.  We live in an area that abounds in precious metal ores, azurite and malachite, aquarmarine, rubies, emeralds.  Just dig right in.

 

I should stop in and take a look at your rocks.

I’ve been here for decades.  Why bother now?

 

I’m bringing the kids over to look at rocks.  Kids just LOVE rocks.

This isn’t a toy store.

 

Do you have a rock polisher?

Yes  I’ve got an all-in-one machine that tumbles, makes cabochons, facets and does the whole operation.  You just press a few buttons and let ‘er rip.

 

Are these rocks basically what was left over from your grandfather’s business?

Are you a rude SOB who never learned any manners?

 

What is this specimen?

It’s an ugly gray rock.  Why do you want to know?

 

Do you buy rocks?

Leave your number.  If I want your damn rocks, I’ll call you.

 

My uncle used to polish rocks.

Bless him.

 

Where do you get all these rocks?

I pick them off from trees.

 

Have you been to Duluth?  They have a nice BIG rock shop over there.

F*** you.

 


 


Posted by oh5/ojhoff at 7:16 PM CDT
Updated: 06/14/12 7:21 PM CDT
Post Comment | Permalink | Share This Post

Newer | Latest | Older