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Little Joe No. 2 adit (Joe 2 adit; Little Joe II adit), Stewart Mine (MS 6162; Stewart Lithia mine), Tourmaline Queen Mountain (Pala Mtn; Queen Mtn), Pala, Pala District, San Diego Co., California, USA

Photo: 2008 SDMC
Latitude: 33°23'0"N
Longitude: 117°3'44"W
Summary:
The Little Joe No. 2[1] is an adit driven southwesterly into the Stewart pegmatite for several hundred feet using mechanized haulage to develop a series of inclined room and pillar crosscuts that encountered several major pockets containing gem quality crystals of fine rubellite, morganite, and kunzite; associated with accessory minerals such as lepidolite, quartz, and montmorillonite. The adit was originally a short exploratory drift developed by the American Lithia and Chemical Company circa 1907, which was reported to have produced light pink kunzite and some gem tourmaline. These workings were later widened and extended further down dip between the late 1980's and early 90's. The adit and underground workings are located on the patented Stewart mine property. Elevation approx. 1069' AMSL.

Footnote:
1.The adit was named in honor of the fictional character Little Joe Cartwright, from the popular American television series "Bonanza", a Western themed show which aired on NBC from 1959 to 1973.

Mineral List

Albite
var: Cleavelandite
Almandine
Biotite
Elbaite
Kaolinite
Lepidolite
Lithiophilite
Microcline
Montmorillonite
Muscovite
Quartz
Schorl
Spessartine
Spodumene
Spodumene
var: Kunzite

'Tourmaline'
'var: Indicolite'
'var: Rubellite'
'var: Verdelite'


20 entries listed. 13 valid minerals.

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References

Merrill, F. J. H. (1914), Geology and Mineral Resources of San Diego and Imperial Counties: Gems, Lithia Minerals. California State Mining Bureau, San Francisco, Cal. California State Printing Office, December. Chapter 1, pages 61-110.

Sheppard, J. B. (2008), History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, San Diego Mining Company (SDMC). June/July.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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