.	Dwarves' Earth Treasures Online Museum: Delaware Datolites found by JA Delaware Mine, Delaware, Keweenaw Co., Michigan	.

    I hadn't had luck of finding any datolites until August 2003 when I started finding small datolites "marbles" from one location which all are gray to white. Over time I started exploring the mine dumps and noticed that the datolites are found in concentrations. That tells me that each time the miners hit on a datolite seam, they would mine them out and dump them in one place. If they hit another seam, they take them out and dump them in a different place. After exploring and collecting, it seemed that the Delaware Mine may had at least three seams of datolites (datolite "Marbles", rare yellow datolites, red datolites, and white datolites with red-pink spots).
    At August 2005, I finally found five colored datolites (red and orange) at one location, and I could have found more if it hasn't started raining. I came back to the Delaware Mine in August 2006 only to discover that two of my favorite "spots" had been buried by all of the excessive bulldozing and I was upset. I know they were trying to find the concentration of red datolites, but I don't like the way it was bulldozed (they should had bulldozed the rocks away from the mine, NOT toward it). In spite of this setback, I continued exploring around trying to re-discover my favorite spots and found two large ones in plain sight. As of August 2007, I found only two "marbles" and the datolites seem to be scattered randomly due to too much bulldozing.
Strong & unusual citrus orange color! August 2005 (from my favorite spot buried by August 2006 bulldozing)

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Typical white nodule but with interesting patterns, from Datolite "Marble" site, buried by 2006 bulldozing August 2004	Datolite "Marble", first datolite found at Delaware (Site buried by August 2006 bulldozing) August 2003
Datolite "Marble" with "blood vein" August 2004	Spotty pattern, August 2006
Grayish (purplish?) datolite, August 2006	Pink Datolite, from JA's favorite spot  (buried by 2006 bulldozing) August 2005
Red datolites from JA's favorite spot  (buried by 2006 bulldozing) August 2005	Various small datolites from JA's favorite spot  (buried by 2006 bulldozing) August 2005
One of five largest datolites found so far August 2006	One of five largest datolites found so far, red dots August 2006