Pa 
154 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
10. CALAVERAS COUNTY. 
Rocks collected by H. W. Turner, and described in 14th Ann., p. 441. Additional 
data supplied by Turner relative to analysis B. Analyses by W. F. Hillebrand, 
record No. 1432. 
A. Metadacite, 1} miles southeast of Milton. Vulcanose. Contains quartz, feld- 
spar, and hornblende. P. R. C. 777. 
B. Metadacite, 1} miles northeast of Milton. Lassenose. Contains feldspar, quartz, 
epidote, chlorite, and iron ore, in a groundmass made up probably of feldspar and 
quartz. P.R. C. 752. 
C. Meta-andesite, 14 miles northward from Jenny Lind. Placerose. Contains 
quartz, plagioclase, epidote, and chlorite derived from augite. 
A B. Cc. 
BIO s2neee aed sacs ideaaaasloe soa amstaa stg Lawes noose: Bese naeeice aeae eases 72.24 | 71.19 61.37 
Ws O guess ce wathce tic oce Rar vatatetieclacserisisietecsrclctnn aeenininastdbiwindsioneiiataepecine 13.84 | 13.81 15. 41 
Bes panies t ons atalniadenesdriaiatudedudwint pedo haeSuin hws pideseemotesnecsas 1. 45 1.45 3.15 
Be Oe crcsecienas sue we Cesare ashe et cmsbatameaisiee see Paes steer esseemnce tates 1.86 1. 68 3. 89 
MEO lo. ccsis scene aciisew nia aecsinectussals ses see osecis ware teeReEiesseeeaRee 1.10 .74 3. 48 
CBO ia cretceceny sense ciae stele ateesrennc taht PaaS eemiese tb nieve sie et SESE oeeseoteIe neste atele 3. 40 2. 87 4, 42 
EN 89 Oia cre focite sts wy awiereve ESE Ree Ae Rin aks Hawn Gaye Eee teem ealaminied arn conse ete 4, 43 4.24 3.76 
KO wane quence sees aemsaes Bie ieenceastiady sel eeerezemter Seeeedeeeias os Sones 39 1.82 84 
FO Bt M00 asses sec tincinds 2x daS ke ee ku ee Gena Sainte ee SEE ISe SINS Ae eae 17 215 29 
H20 above 100°. 69 92 2.70 
Was... 41 +35 - 60 
P20; 10 - 08 08 
MnO 12 07 47 
sro. trace | trace trace 
Bao. 08 -16 
COs. ox nceequseneuweesesensecane yest eueeaseee oe viewemisieie een seecinsdatesiegiestebeus|hoecnces 82 teccsainte 
100. 28 | 100.35 | 100.04 
11. TUOLUMNE COUNTY. 
Rocks collected by H. W. Turner, and partly described in his papers in 14th and 
17th Ann. The latites were named and described by Ransome in Bull. 89. Some 
additional data have been furnished by Turner. 
