Gates-Adah kimberlite dikes, Masontown, Fayette Co., Pennsylvania, USA
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|Location is approximate, estimate based on other nearby localities.|
|Latitude & Longitude (WGS84):||39° North , 79° West (est.)|
|Margin of Error:||~33km|
|Köppen climate type:||Cfb : Temperate oceanic climate|
Peridotite dikes, 2.5 miles northwest of Masontown. The Gates Adah Kimberlite is Upper Middle Jurassic (185mya) in age and is not diamondiferous.
13 valid minerals.
Rock Types Recorded
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Entries shown in red are rocks recorded for this region.
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American Mineralogist (1984): 69: 30-40.
Stone, W.E. and Fleet, M.E. (1990) Platinum-iron alloy (Pt3Fe) in kimberlite from Fayette County, Pennsylvania. American Mieralogist: 75: 881-885.
Bikerman, Michael et al. (1997). New Phlogopite K-Ar Dates and the Age of Southwestern Pennsylvania Kimberlite Dikes.
Smith, R.C. and Barnes, J.H. (2006) Blue Gray by Day and Pinkish Purple by Night: Pennsylvania's Pyrope Garnets. Pennsylvania Geology: 36(4), 2-10.
Shultz, C.H. Jurassic Kimberlite Dikes. The Geology of Pennsylvania. Pennsylvania Geological Survey and Pittsburgh Geological Survey Special Publication 1, reprinted in 2002, pages 211-217.
Schulze, D. J., & Hearn, B. C. (2016). Mantle Xenocrysts from the Masontown, Pennsylvania Kimberlite: an Ordinary Mantle with Si-enriched Spinel. The Canadian Mineralogist 53:767-773